How to Add Groups to Your Shortcut Bar on the Facebook App
Facebook can display the Groups icon on the shortcut bar based on your activity. To permanently keep the Groups icon on the bar, go into the Facebook app settings. The steps are similar on iOS and Android. The screenshots below are from the Facebook app on iOS.
Open the Facebook app and tap Menu. Select Settings and privacy. Select Settings. Go down the list of Preferences and choose Shortcuts. Select Shortcut bar. On the Customize your shortcut bar screen tap, select the Groups drop-down arrow. Select Pin or Auto. “Pin” keeps Groups on the shortcut bar while “Auto” controls the visibility of the Groups icon based on your activity in any of your groups. Select Hide to remove Groups from the shortcut bar.
How to Add a Group to the Menu on Facebook Desktop
Facebook on the desktop doesn’t have a shortcut bar. However, you can go to Groups from the left pane and add your favorite groups under the main Groups icon by pinning them.
Open Facebook in a desktop browser. From the News Feed, select Groups in the left pane (select See more if all icons aren’t visible). The Groups page lists the Groups you manage and the Groups you’ve joined. To pin the group, first select the group to visit its page. Then select the three-dot menu > Pin group. Pinned groups will appear in the left pane, underneath Your shortcuts. You may need to refresh the page for changes to take effect.