Yamaha MMP1 Operation Manual page 31

4-1-8e. Scene Tab/Talkback Destination
Here you can set up to eight Talkback interrupt destination entries. Settings configured here can be used in the "Talkback"
section on the Sub screen.
Destination Determines the Talkback interrupt destination from 1-8.
Bus Select the mic input used for Talkback. Mic 1 and Mic 2 for Bus 1 refer to Talkback Mic In 1-1 and 1-2 on the
Patch screen, and Mic 1 and Mic 2 for Bus 2 refer to Talkback Mic In 2-1 and 2-2 on the Patch screen.
NOTE
You can set which signals to assign to Mic 1 and Mic 2 in the "Input Patch/Talkback Mic In" section on the
Patch screen.
Select the check box corresponding to Talkback interrupt destinations you want to select.
4. Screens
MMP1 Operation Manual 31