Setting up a Counter
Create a new Entry Custom Field for example at Booking level. In the Counter selector, choose Configure. Now in the Counters table right-click and choose New. Give the Counter a name, for example "Edit Production #" and set what the Next Value should be. Press OK and once back in the Custom Field configuration window, select the Counter: Edit Production #. In this example we have also created a second Custom Field to have a Counter for Sound Production #. The idea is that all Edit Booking across all Projects that are for the Edit Department have their own numbering, and all Sound Bookings have their own.
Using the Counter
Continuing with the above example, once a Booking is created and the Booking Name Edit or Sound is populated, the User presses the +1 icon next to the Entry Custom Field so a new number is allocated from the Counter.