Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 114)

114 MAESTRO — Automation Interface Protocol Technical Reference Manual
Section 5 — Definition of Extended Maestro Commands
Notes:
Mapping is one to one or one to many. Only a single group can be specified in the input groupMask.
The VIDEO group cannot be mapped.
Command will Assign, Select and Map as necessary.