We're installing a system with Cerbo GX and GX Touch 50. We have a Multiplus 12/3000/120. I am confused on whether we will be able to turn the Multiplus on/off through the GX Touch 50 screen, or we still need a Digital Multi Control GX? We went with the Cerbo GX and Touch 50 setup to be able to control the entire system from one source. Thanks.