Many cash registers use departments for the various taxes.
It would be interesting in the model fee to add a field where you can enter a number (1, 2, 3, 4) to indicate the tax department.
This number should be printed in a print template {tax department}
Another interesting change may be to choose whether to be notified when you have to close the period of work, and maybe its time.
sometimes it happens that you have customized rounds of 32/48 hours or greater divided by groups of users.