In this article, we'll show you how to add groups to the shortcut bar on Facebook. The visibility of icons like Groups on the shortcut bar is managed through the Facebook app settings on iOS and Android.
How to Customize Facebook Shortcut Bar Settings
Facebook can display the Groups icon on your shortcut bar based on your activity. To keep the Groups icon on the bar permanently, go to 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.