How does temple room placement actually work?

Is there a definitive guide ANYWHERE???

It's mainly the rooms that have things in them that are confusing. Sometimes they can connect, sometimes they can't. It seems completely arbitrary and completely undecipherable.

How on earth did the mechanic get released in this state?

Edit: Path rooms / empty rooms make no sense either. Sometimes they'll connect where there's no opening/entrance on the room, sometimes they won't. WTF is this league?

i agree with you. Theres no explanation as to why you can only add some rooms some places.

They should have let us put the rooms anywhere we wanted

PoE2 decisions have consistently stripped away player agency. I don't understand why they make the decisions they have made. Or decisions contrary to what they claim: like PoE2 is meant for a more casual player with easier use. It's why they removed homogonous omens, supposedly. Because of the interaction with item tags. But then they release this overly complicated temple with zero explanation. At least with the omens I understood I was going to have to look up modify tags on PoE-DB.

yeah, I am not sure if I clicked through a tutorial, but even if I did, the degree to which it is not intuitive took some sincere effort on their part. It seems deliberately infuriating, I'm on my 6th or 7th temple run and the path I'm able to create seems to only move AWAY from the direction I want to go.