Please remind the possible keyboard input for ticket sales. Besides being able to perform all actions with the mouse to the appropriate tickets and devices, you can greatly simplify your work by using the keyboard ticket sales on the condition to have the ticketing option set to "Simple". Keep in mind that you have no training required for the setting "Heavy" in this case! However, you are open to use the following keystrokes. Imagine, the passenger stands in front of you, tells a ticket request and puts his money to the cash desk:

Optionally, you can also operate the changer with the keyboard. To save time, but do not get out of practice :