How does pausing the game work in a party

I'm curious how pausing works in a party? Was this mentioned anywhere? Multilayer with pausing is not something I had considered before.

If you are solo and someone enters your instance, does the game automatically unpause?

Does being in a party while you are the only one in the instance mean the pause feature is disabled automatically?

What happens when you are partied but someone leaves the party while in your instance? Do you have to reset the instance to re-enable the pausing feature, or is pausing enabled once there is only 1 person left in the instance?

yes

first time i see alpha member asking some question he doesnt know answer to

If I tested POE2, I would know

Jonathan Rogers said in one of his interviews (don't ask me which, I've seen too many) that multiplayer instances pause when all players in that instance are pausing

If I remember right the question with someone entering while the instance is paused came up, but I cannot remember what the answer was or if there was one at the time