First, go to the dashboard on app.shuttlesub.com and login as a staff member.
There are two ways from the dashboard for going to the Ticket Control. In the dock you can click on the ticket icon.
Or you can click on a specific shuttle and click on Ticket Control so you will be redirected to the right shuttle immediately.Or click on this link -> Ticket Control
Next, in the green marked area, you can first select the date. This is not needed when you have chosen for Ticket Control from the dedicated shuttle. In the red area you select the shuttle you would like to check tickets for.