Monoprice 6 Zone Automation

I am yet another new user of Home Assistant. I am wanting to do some automation with my Monoprice 6 zone whole home audio system. I have it added via the monoprice integration and can see all the entities.

I can set the source, volume, and a couple of other things from HA’s UI:

And for automation, I can use many of these states as a trigger:

However, there are only the two options available for actions > call service:

And nothing available under the speaker entity’s actions > device:

I have poked through tons of pages and the source with no success. Anyone have any tips to help me with automating some of these ‘states’? Thanks in advance!

Hello, I am new to the home assistance community. I have brought Monoprice 6 - zone amplifier and trying to integrate with Home assistance Via Rs-232 to USB method. Can you please guide me through the process.

If you have used Network method. Can you also guide me through the steps on what equipments i need to purchase and port setting in the process of configurations.