The blocks created by the sellers will be displayed under this section. Admin can approve and disapprove the blocks. 

Navigate to the Admin → ADVERTISEMENT→ Ad Positions.

If the admin is disapproving any block then, after clicking on disapproving below dialogue box will appear. Select OK to approve or Cancel to disapprove.

Additionally, the admin can change the status by selecting multiple ad’s position names and choosing the enable and disable options, as shown below.