Setup confusion

I came over from a hive combi set up

From my understanding your are me to have trv’s on all but one radiator

One the hive system I had the main thermostat which schedule with the heat on demand off on trv

So the tvr was set to a maximum temp as allocated on each room and only got to that temp then shut off

The boiler only heated the house via the timed schedule heating each room

So the dilemma I have is

I now have tado tvr on all but one radiator with each tvr having its own schedule

What is the point on the main thermostat?

Should I do away with the main thermostat and just fit another tvr to the only radiator that does not have one already fitted

So each room has its own schedule ?

What is the best solution?