Autocue QMaster for Complex Languages - Manual (Page 45)

The Available Control Types lists all the scroll controls that are currently licensed for your
software. From the list, select the type of control you wish to use. After a scroll control has
been selected for operation with QMaster, you can configure it so that the various buttons and
wheels perform specific actions.
Note: You cannot configure scroll controls when you are in Prompt
mode.
Assigning a default controller
When you either click OK or choose an alternative option in the QMaster Configuration dialog
the device that was last selected from the Scroll Controls list becomes the default scroll
controller.
If the default controller is disabled or unplugged during a prompting session, you can rapidly
swap to an alternative controller by selecting Prompt >> On-Screen Scroll Panel from the menu
bar.