In the Data List manual, p 51, it states that 6 of the Performance Part buttons (3-8) can be assigned to Cubase controls ("Assignable functions
For information on the default functions, refer to the “Reference Manual” PDF document."). I find no mention of how to assign Cubase control functions to these buttons in the Reference Manual. How is it done?
Please see the Reference Manual Page 35 “Remote Control Assignments”
If you still have questions please tell us what type of computer (Windows or Mac) you are using.
We have Setup articles for each in the LEARN area under “MX” that show example assignments to those very buttons.