Announcements added to the Bulletin Board of a Community Group will appear in order of Publish Date, with the Announcement with the most recent Publish Date listed first/on top.

To change the order of the Announcements, the Community Group Owner/Manager/Content Editor will need to edit the publish dates of the announcements.
  1. Navigate to the Group.
  2. Select Bulletin Board.
  3. Click Enter Edit Mode in the upper right corner. 
  4. Locate your Announcements channel, and edit each announcement.
  5. Give the announcement you want to display first/at the top the most recent date - then set descending dates for the announcements to follow, in the order you want them to appear.
  6. Save the Publish Dates.

Edit Publish Date

Publish Date Order