When a user is created and attached to a mini market, there is a check box that needs to be selected if the user should be allowed to deliver in orders within each mini market. This is a function that can be activated or deactivated at any point.
At the top, click the Admin Cogs icon, then from the left, click Mini Markets.
Click Manage Mini Markets, to select the mini market required click the Edit, pen and paper icon.
At the top, click into the Users tab, to search for the user, use the filter box.
Select the user and click the Edit, pen and paper icon.
Check the Can Deliver Orders box and to save the changes click Update User.