Control multiple thermostats?

Hi there, I have 2 Thermostats from Zigbee, grouped in HA.
Is there a way to controll both thermostats at the same time manually?
Means: I want to go to one of my 2 thermostats, set a temperature, and the other one should aquire the same temperature. It works via group in HA. But I want to set the temperature manually as well.
Hope you can help