Giannis Kipouros

Add custom notices to the top of the main activity feed. You can add as many as you want, select the member types who will see the notice, and allow visitors to hide the notice.
It supports BuddyPress and BuddyBoss feeds.
Like this plugin? Please consider <a href="https://wordpress.org/support/plugin/bp-pinned-feed-notices/reviews/#new-post" rel="ugc">leaving a 5-star review</a>.
Do you want customizations: Contact me at <a href="https://gianniskipouros.com/" rel="nofollow ugc">gianniskipouros.com</a>.

Pinned Feed Notices for BuddyPress

Add custom notices  to the top of the main activity feed.

Pippin Williamson

This add-on plugin for bbPress will allow you to place forum-wide notices for alerting your users to important information, such as delayed response times, operating hours, new features, etc.
If you have suggestions or bugfixes for the plugin, please report them on <a href="https://github.com/pippinsplugins/bbPress-Notices" rel="nofollow ugc">Github</a>.

bbPress – Notices

An extension for bbPress to easily show notices at the top of all forum pages.

Pinned Feed Notices for BuddyPress vs bbPress – Notices