You can "Feature" a posted message, file, event, task, or link on a workspace so that it always shows up at the top of your Latest Activity. This allows you to push important information to the top no matter what people post afterward.

1. Post your message, file, etc. like you normally. do.
2. Click on the "Actions" menu that shows up to the right of the date/time it was posted.
3. Choose "Feature on this page."
4. If you want to "Unfeature" the post, click on "Actions" again and then choose "Unfeature on this page."