Multiple room control over ecobee

I apologize if this has already been asked, but I couldn't find it on my search. Here's the scenario I'm trying to build:

I plan on installing a vent on every room in my house, and I'll have a Puck and/or Ecobee remote sensor in every room as well.

Ecobee integrates with HomeKit. Therefore, if I ask Siri to set the room temperature to 72F, will Flair vents adjust themselves to only set 72F to the rooms that have occupancy? Will the other rooms remain at the lowest consumption flow possible?

Also, can I override that behaviour during a specific time of the day? Let's say, between 4PM and 10PM, no matter the room occupancy, the whole house should be 72F, and after 10PM only the master bedroom should be at the 72F and the rest of the house to the lowest flow possible (unless one of the room has occupancy). Is that possible? Will that affect my ability to change Ecobee's temperature (through Siri) from 72 to 74, and will that change in temperature cancel all the custom timed configurations and set the whole house to 74?