1. In Setup, enter Profiles in the Quick Find box, then click Profiles in your results.
2. Click Edit next to the profile you plan to use.
3. Under Administrative Permissions, select Pin Posts inFeeds.
4. Click Save.Everyone assigned the edited profile can pin up to three posts to the top of the group and topics feeds that they have access to.Note The Pin Postoption appears on the post overflow menu only to users with permission. The optionappears on the post overflow menu only in the feed and not in the post’s detailview.