there is a new thread Complete heating management, including door/windows openings, schedule heating and manual override
I think i created the helper for room link (explained in the link above) and set it to none (nothing opened).
I only tried it and decided to stay with the other blueprint i was using for the rooms.
https://community.home-assistant.io/t/advanced-heating-control
I added an automation to switch the boiler off based on added valve openings from all TRVs and room temperatures reached in important rooms.