Under the admin menu select - Users & permissions - Users
At the top of your page you can review how many mobile licenses you have available and how many you have used. Your used licenses will be counted by active users who have a resource attached. 
If you would like to purchase more licenses please call Oneserve on 01392 367 367
The alternative would be to deactivate existing mobile users that are no long required to fee up the extra licenses.
To deactivate a user select the pencil next to the user
Un-tick the enabled button and click on update.
The second option to reuse a licence is to remove the name in the mobile resource box.
