Yamaha MTX Series Setup Manual page 134

4.
Click the MTX5-D in [Receivers] and [Transmitters], and the XMV8280-D in [Receivers],
so that they are expanded.
If they are already expanded, leave them as they are.
5.
Click the location where the "1" of the PGM1 and MTX5-D intersect.
A appears in the grid.
Example 5) A system using the PGM1 for paging
MTX Setup Manual
134