As a user, if you open a pull-request you can see the approval status just opening Moderator tab. This tab shows all the moderator/s defined per repository or project basis.
You can see, for each moderator, the current status (WAINTING/APPROVED) and the related approval date.
Each pull-request needs at least one moderator approval to go ahead with the merge. If no moderator approval has been performed you can't merge and a specific message is displayed.
