diff --git a/src/components/Custom/AnimatedBottomBar.js b/src/components/Custom/AnimatedBottomBar.js
index 830ca19..49da962 100644
--- a/src/components/Custom/AnimatedBottomBar.js
+++ b/src/components/Custom/AnimatedBottomBar.js
@@ -2,12 +2,14 @@
 
 import * as React from 'react';
 import {StyleSheet, View} from "react-native";
-import {IconButton, Surface, withTheme} from "react-native-paper";
+import {Button, IconButton, Surface, withTheme} from "react-native-paper";
 import AutoHideComponent from "./AutoHideComponent";
 
 type Props = {
+    navigation: Object,
     theme: Object,
     onPress: Function,
+    currentGroup: string,
 }
 
 type State = {
@@ -39,6 +41,10 @@ class AnimatedBottomBar extends React.Component<Props, State> {
         this.displayModeIcons[DISPLAY_MODES.MONTH] = "calendar-range";
     }
 
+    shouldComponentUpdate(nextProps: Props) {
+        return (nextProps.currentGroup !== this.props.currentGroup);
+    }
+
     onScroll = (event: Object) => {
         this.ref.current.onScroll(event);
     };
@@ -79,6 +85,13 @@ class AnimatedBottomBar extends React.Component<Props, State> {
                             style={{marginLeft: 5}}
                             onPress={() => this.props.onPress('today', undefined)}/>
                     </View>
+                        <Button
+                            icon="book-variant"
+                            onPress={() => this.props.navigation.navigate('group-select')}
+                            style={{maxWidth: '40%'}}
+                        >
+                            {this.props.currentGroup.replace(/_/g, " ")}
+                        </Button>
                     <View style={{flexDirection: 'row'}}>
                         <IconButton
                             icon="chevron-left"
diff --git a/src/components/Lists/GroupListAccordion.js b/src/components/Lists/GroupListAccordion.js
new file mode 100644
index 0000000..52e852d
--- /dev/null
+++ b/src/components/Lists/GroupListAccordion.js
@@ -0,0 +1,94 @@
+// @flow
+
+import * as React from 'react';
+import {List} from 'react-native-paper';
+import {FlatList} from "react-native";
+import {stringMatchQuery} from "../../utils/Search";
+
+type Props = {
+    item: Object,
+    onGroupPress: Function,
+    currentSearchString: string,
+    height: number,
+}
+
+type State = {
+    expanded: boolean,
+}
+
+const LIST_ITEM_HEIGHT = 64;
+
+const REPLACE_REGEX = /_/g;
+
+export default class GroupListAccordion extends React.Component<Props, State> {
+
+    state = {
+        expanded: false,
+    }
+
+    shouldComponentUpdate(nextProps: Props, nextSate: State) {
+        if (nextProps.currentSearchString !== this.props.currentSearchString)
+            this.state.expanded = nextProps.currentSearchString.length > 0;
+
+        return (nextProps.currentSearchString !== this.props.currentSearchString)
+            || (nextSate.expanded !== this.state.expanded);
+    }
+
+    onPress = () => this.setState({expanded: !this.state.expanded});
+
+    keyExtractor = (item: Object) => item.id.toString();
+
+    renderItem = ({item}: Object) => {
+        if (stringMatchQuery(item.name, this.props.currentSearchString)) {
+            const onPress = () => this.props.onGroupPress(item);
+            return (
+                <List.Item
+                    title={item.name.replace(REPLACE_REGEX, " ")}
+                    onPress={onPress}
+                    left={props =>
+                        <List.Icon
+                            {...props}
+                            icon={"chevron-right"}/>}
+                    right={props =>
+                        <List.Icon
+                            {...props}
+                            icon={"star"}/>}
+                    style={{
+                        height: LIST_ITEM_HEIGHT,
+                        justifyContent: 'center',
+                    }}
+                />
+            );
+        } else
+            return null;
+    }
+
+    itemLayout = (data: Object, index: number) => ({length: LIST_ITEM_HEIGHT, offset: LIST_ITEM_HEIGHT * index, index});
+
+    render() {
+        const item = this.props.item;
+        return (
+            <List.Accordion
+                title={item.name}
+                expanded={this.state.expanded}
+                onPress={this.onPress}
+                style={{
+                    height: this.props.height,
+                    justifyContent: 'center',
+                }}
+            >
+                {/*$FlowFixMe*/}
+                <FlatList
+                    data={item.content}
+                    extraData={this.props.currentSearchString}
+                    renderItem={this.renderItem}
+                    keyExtractor={this.keyExtractor}
+                    listKey={item.id}
+                    // Performance props, see https://reactnative.dev/docs/optimizing-flatlist-configuration
+                    getItemLayout={this.itemLayout}
+                    removeClippedSubviews={true}
+                />
+            </List.Accordion>
+        );
+    }
+}
\ No newline at end of file
diff --git a/src/managers/AsyncStorageManager.js b/src/managers/AsyncStorageManager.js
index 9b93502..29c3ed0 100644
--- a/src/managers/AsyncStorageManager.js
+++ b/src/managers/AsyncStorageManager.js
@@ -79,6 +79,11 @@ export default class AsyncStorageManager {
             default: '1',
             current: '',
         },
+        planexCurrentGroup: {
+            key: 'planexCurrentGroup',
+            default: '',
+            current: '',
+        },
     };
 
     /**
diff --git a/src/navigation/MainTabNavigator.js b/src/navigation/MainTabNavigator.js
index 24d4fd3..4a21a2f 100644
--- a/src/navigation/MainTabNavigator.js
+++ b/src/navigation/MainTabNavigator.js
@@ -20,6 +20,7 @@ import ScannerScreen from "../screens/ScannerScreen";
 import MaterialHeaderButtons, {Item} from "../components/Custom/HeaderButton";
 import FeedItemScreen from "../screens/FeedItemScreen";
 import {createCollapsibleStack} from "react-navigation-collapsible";
+import GroupSelectionScreen from "../screens/GroupSelectionScreen";
 
 
 const TAB_ICONS = {
@@ -283,6 +284,22 @@ function PlanexStackComponent() {
                     useNativeDriver: false, // native driver does not work with webview
                 }
             )}
+            {createCollapsibleStack(
+                <PlanexStack.Screen
+                    name="group-select"
+                    component={GroupSelectionScreen}
+                    options={({navigation}) => {
+                        return {
+                            title: 'GroupSelectionScreen',
+                            ...TransitionPresets.ModalSlideFromBottomIOS,
+                        };
+                    }}
+                />,
+                {
+                    collapsedColor: 'transparent',
+                    useNativeDriver: true,
+                }
+            )}
         </PlanexStack.Navigator>
     );
 }
diff --git a/src/screens/GroupSelectionScreen.js b/src/screens/GroupSelectionScreen.js
new file mode 100644
index 0000000..2ce3721
--- /dev/null
+++ b/src/screens/GroupSelectionScreen.js
@@ -0,0 +1,170 @@
+// @flow
+
+import * as React from 'react';
+import {Platform, View} from "react-native";
+import i18n from "i18n-js";
+import {Searchbar, withTheme} from "react-native-paper";
+import {stringMatchQuery} from "../utils/Search";
+import WebSectionList from "../components/Lists/WebSectionList";
+import GroupListAccordion from "../components/Lists/GroupListAccordion";
+
+const LIST_ITEM_HEIGHT = 70;
+
+type Props = {
+    navigation: Object,
+    route: Object,
+    theme: Object,
+    collapsibleStack: Object,
+}
+
+type State = {
+    currentSearchString: string,
+};
+
+function sortName(a, b) {
+    if (a.name.toLowerCase() < b.name.toLowerCase())
+        return -1;
+    if (a.name.toLowerCase() > b.name.toLowerCase())
+        return 1;
+    return 0;
+}
+
+const GROUPS_URL = 'http://planex.insa-toulouse.fr/wsAdeGrp.php?projectId=1';
+
+/**
+ * Class defining proximo's article list of a certain category.
+ */
+class GroupSelectionScreen extends React.Component<Props, State> {
+
+    constructor(props) {
+        super(props);
+        this.state = {
+            currentSearchString: '',
+        };
+    }
+
+    /**
+     * Creates the header content
+     */
+    componentDidMount() {
+        this.props.navigation.setOptions({
+            headerTitle: this.getSearchBar,
+            headerBackTitleVisible: false,
+            headerTitleContainerStyle: Platform.OS === 'ios' ?
+                {marginHorizontal: 0, width: '70%'} :
+                {marginHorizontal: 0, right: 50, left: 50},
+        });
+    }
+
+    /**
+     * Gets the header search bar
+     *
+     * @return {*}
+     */
+    getSearchBar = () => {
+        return (
+            <Searchbar
+                placeholder={i18n.t('proximoScreen.search')}
+                onChangeText={this.onSearchStringChange}
+            />
+        );
+    };
+
+    /**
+     * Callback used when the search changes
+     *
+     * @param str The new search string
+     */
+    onSearchStringChange = (str: string) => {
+        this.setState({currentSearchString: str})
+    };
+
+    /**
+     * Callback used when clicking an article in the list.
+     * It opens the modal to show detailed information about the article
+     *
+     * @param item The article pressed
+     */
+    onListItemPress = (item: Object) => {
+        this.props.navigation.navigate("planex", {
+            screen: "index",
+            params: {group: item}
+        });
+    };
+
+    shouldDisplayAccordion(item: Object) {
+        let shouldDisplay = false;
+        for (let i = 0; i < item.content.length; i++) {
+            if (stringMatchQuery(item.content[i].name, this.state.currentSearchString)) {
+                shouldDisplay = true;
+                break;
+            }
+        }
+        return shouldDisplay;
+    }
+
+    /**
+     * Gets a render item for the given article
+     *
+     * @param item The article to render
+     * @return {*}
+     */
+    renderItem = ({item}: Object) => {
+        if (this.shouldDisplayAccordion(item)) {
+            return (
+                <GroupListAccordion
+                    item={item}
+                    onGroupPress={this.onListItemPress}
+                    currentSearchString={this.state.currentSearchString}
+                    height={LIST_ITEM_HEIGHT}
+                />
+            );
+        } else
+            return null;
+    };
+
+    generateData(fetchedData: Object) {
+        let data = [];
+        for (let key in fetchedData) {
+            data.push(fetchedData[key]);
+        }
+        data.sort(sortName);
+        return data;
+    }
+
+    /**
+     * Creates the dataset to be used in the FlatList
+     *
+     * @param fetchedData
+     * @return {*}
+     * */
+    createDataset = (fetchedData: Object) => {
+        return [
+            {
+                title: '',
+                data: this.generateData(fetchedData)
+            }
+        ];
+    }
+
+    render() {
+        return (
+            <View style={{
+                height: '100%'
+            }}>
+                <WebSectionList
+                    {...this.props}
+                    createDataset={this.createDataset}
+                    autoRefreshTime={0}
+                    refreshOnFocus={false}
+                    fetchUrl={GROUPS_URL}
+                    renderItem={this.renderItem}
+                    updateData={this.state.currentSearchString}
+                    itemHeight={LIST_ITEM_HEIGHT}
+                />
+            </View>
+        );
+    }
+}
+
+export default withTheme(GroupSelectionScreen);
diff --git a/src/screens/Websites/PlanexScreen.js b/src/screens/Websites/PlanexScreen.js
index 17e1e59..db3be9b 100644
--- a/src/screens/Websites/PlanexScreen.js
+++ b/src/screens/Websites/PlanexScreen.js
@@ -12,9 +12,11 @@ import {withCollapsible} from "../../utils/withCollapsible";
 import {dateToString, getTimeOnlyString} from "../../utils/Planning";
 import DateManager from "../../managers/DateManager";
 import AnimatedBottomBar from "../../components/Custom/AnimatedBottomBar";
+import {CommonActions} from "@react-navigation/native";
 
 type Props = {
     navigation: Object,
+    route: Object,
     theme: Object,
     collapsibleStack: Object,
 }
@@ -24,6 +26,7 @@ type State = {
     dialogVisible: boolean,
     dialogTitle: string,
     dialogMessage: string,
+    currentGroup: Object,
 }
 
 
@@ -105,10 +108,13 @@ const LISTEN_TO_MESSAGES = `
 document.addEventListener("message", function(event) {
     //alert(event.data);
     var data = JSON.parse(event.data);
-    $('#calendar').fullCalendar(data.action, data.data);
+    if (data.action === "setGroup")
+        displayAde(data.data);
+    else
+        $('#calendar').fullCalendar(data.action, data.data);
 }, false);`
 
-const CUSTOM_CSS = "body>.container{padding-top:20px; padding-bottom: 50px}header{display:none}.fc-toolbar .fc-center{width:100%}.fc-toolbar .fc-center>*{float:none;width:100%;margin:0}#entite{margin-bottom:5px!important}#entite,#groupe{width:calc(100% - 20px);margin:0 10px}#calendar .fc-left,#calendar .fc-right{display:none}#groupe_visibility{width:100%}#calendar .fc-agendaWeek-view .fc-content-skeleton .fc-title{font-size:.6rem}#calendar .fc-agendaWeek-view .fc-content-skeleton .fc-time{font-size:.5rem}#calendar .fc-month-view .fc-content-skeleton .fc-title{font-size:.6rem}#calendar .fc-month-view .fc-content-skeleton .fc-time{font-size:.7rem}.fc-axis{font-size:.8rem;width:15px!important}.fc-day-header{font-size:.8rem}.fc-unthemed td.fc-today{background:#be1522; opacity:0.4}";
+const CUSTOM_CSS = "body>.container{padding-top:20px; padding-bottom: 50px}header,#entite,#groupe_visibility,#calendar .fc-left,#calendar .fc-right{display:none}.fc-toolbar .fc-center{width:100%}.fc-toolbar .fc-center>*{float:none;width:100%;margin:0}#entite{margin-bottom:5px!important}#entite,#groupe{width:calc(100% - 20px);margin:0 10px}#groupe_visibility{width:100%}#calendar .fc-agendaWeek-view .fc-content-skeleton .fc-title{font-size:.6rem}#calendar .fc-agendaWeek-view .fc-content-skeleton .fc-time{font-size:.5rem}#calendar .fc-month-view .fc-content-skeleton .fc-title{font-size:.6rem}#calendar .fc-month-view .fc-content-skeleton .fc-time{font-size:.7rem}.fc-axis{font-size:.8rem;width:15px!important}.fc-day-header{font-size:.8rem}.fc-unthemed td.fc-today{background:#be1522; opacity:0.4}";
 const CUSTOM_CSS_DARK = "body{background-color:#121212}.fc-unthemed .fc-content,.fc-unthemed .fc-divider,.fc-unthemed .fc-list-heading td,.fc-unthemed .fc-list-view,.fc-unthemed .fc-popover,.fc-unthemed .fc-row,.fc-unthemed tbody,.fc-unthemed td,.fc-unthemed th,.fc-unthemed thead{border-color:#222}.fc-toolbar .fc-center>*,h2,table{color:#fff}.fc-event-container{color:#121212}.fc-event-container .fc-bg{opacity:0.2;background-color:#000}.fc-unthemed td.fc-today{background:#be1522; opacity:0.4}";
 
 const INJECT_STYLE = `
@@ -127,15 +133,6 @@ class PlanexScreen extends React.Component<Props, State> {
 
     customInjectedJS: string;
 
-    state = {
-        bannerVisible:
-            AsyncStorageManager.getInstance().preferences.planexShowBanner.current === '1' &&
-            AsyncStorageManager.getInstance().preferences.defaultStartScreen.current !== 'Planex',
-        dialogVisible: false,
-        dialogTitle: "",
-        dialogMessage: "",
-    };
-
     /**
      * Defines custom injected JavaScript to improve the page display on mobile
      */
@@ -143,16 +140,58 @@ class PlanexScreen extends React.Component<Props, State> {
         super();
         this.webScreenRef = React.createRef();
         this.barRef = React.createRef();
-        this.generateInjectedCSS();
+
+        let currentGroup = AsyncStorageManager.getInstance().preferences.planexCurrentGroup.current;
+        if (currentGroup === '')
+            currentGroup = {name: "SELECT GROUP", id: 0};
+        else
+            currentGroup = JSON.parse(currentGroup);
+        this.state = {
+            bannerVisible:
+                AsyncStorageManager.getInstance().preferences.planexShowBanner.current === '1' &&
+                AsyncStorageManager.getInstance().preferences.defaultStartScreen.current !== 'Planex',
+            dialogVisible: false,
+            dialogTitle: "",
+            dialogMessage: "",
+            currentGroup: currentGroup,
+        };
+        this.generateInjectedJS(currentGroup.id);
     }
 
-    generateInjectedCSS() {
-        this.customInjectedJS =
-            "$(document).ready(function() {" +
-            OBSERVE_MUTATIONS_INJECTED +
-            FULL_CALENDAR_SETTINGS +
-            LISTEN_TO_MESSAGES +
-            INJECT_STYLE;
+    componentDidMount() {
+        this.props.navigation.addListener('focus', this.onScreenFocus);
+    }
+
+    onScreenFocus = () => {
+        this.handleNavigationParams();
+    };
+
+    handleNavigationParams = () => {
+        if (this.props.route.params !== undefined) {
+            if (this.props.route.params.group !== undefined && this.props.route.params.group !== null) {
+                // reset params to prevent infinite loop
+                this.selectNewGroup(this.props.route.params.group);
+                this.props.navigation.dispatch(CommonActions.setParams({group: null}));
+            }
+        }
+    };
+
+    selectNewGroup(group: Object) {
+        this.sendMessage('setGroup', group.id);
+        this.setState({currentGroup: group});
+        AsyncStorageManager.getInstance().savePref(
+            AsyncStorageManager.getInstance().preferences.planexCurrentGroup.key,
+            JSON.stringify(group));
+        this.generateInjectedJS(group.id);
+    }
+
+    generateInjectedJS(groupID: number) {
+        this.customInjectedJS = "$(document).ready(function() {"
+            + OBSERVE_MUTATIONS_INJECTED
+            + FULL_CALENDAR_SETTINGS
+            + "displayAde(" + groupID + ");" // Reset Ade
+            + LISTEN_TO_MESSAGES
+            + INJECT_STYLE;
 
         if (ThemeManager.getNightMode())
             this.customInjectedJS += "$('head').append('<style>" + CUSTOM_CSS_DARK + "</style>');";
@@ -162,10 +201,10 @@ class PlanexScreen extends React.Component<Props, State> {
             '});true;'; // Prevents crash on ios
     }
 
-    componentWillUpdate(prevProps: Props) {
-        if (prevProps.theme.dark !== this.props.theme.dark)
-            this.generateInjectedCSS();
-    }
+    // componentWillUpdate(prevProps: Props) {
+    //     if (prevProps.theme.dark !== this.props.theme.dark)
+    //         this.generateInjectedCSS();
+    // }
 
     /**
      * Callback used when closing the banner.
@@ -269,8 +308,10 @@ class PlanexScreen extends React.Component<Props, State> {
                     ? this.getWebView()
                     : <View style={{height: '100%'}}>{this.getWebView()}</View>}
                 <AnimatedBottomBar
+                    {...this.props}
                     ref={this.barRef}
                     onPress={this.sendMessage}
+                    currentGroup={this.state.currentGroup.name}
                 />
             </View>
         );
diff --git a/src/utils/Search.js b/src/utils/Search.js
index a9cfa90..501cf58 100644
--- a/src/utils/Search.js
+++ b/src/utils/Search.js
@@ -11,7 +11,8 @@ export function sanitizeString(str: string): string {
     return str.toLowerCase()
         .normalize("NFD")
         .replace(/[\u0300-\u036f]/g, "")
-        .replace(" ", "");
+        .replace(/ /g, "")
+        .replace(/_/g, "");
 }
 
 export function stringMatchQuery(str: string, query: string) {