Matter status updates are short temporary notes about a matter that appear in the right hand column of the matter list.
To post a new status update for a matter, open the matter, go to 'summary' (in the left hand menu in the matter).
The 'status update' box will be in the top left hand side of the view.
Click in the box titled "update status with:" and write your status update. Then click 'update' so save it.
Note that each new status update writes over the last one.
You new status update will appear for that matter in the Matter List.