Roland M-5000 Reference Manual page 12

Main Features
Organic EL displays offering excellent brightness and visibility are provided above both the fader bank section and the assignable fader section,
enabling quick confirmation of information.
3
User-assignable section
Assigning frequently used functions to the user-assignable section lets you display important functions on the top panel at all times. This groups
together four encoders and eight buttons in a compact layout, but you can assign many more functions to this section by switching between three
banks.
12