Matrix

If you want to create a space that propogates permissions, then you there isn't a way to do that built into the spec. Because like the other person said, spaces are collections of rooms. They don't control those rooms.

However, there are multiple bots written that can do something like what you want. Here for example. Essentially you make the bot the admin, and then only create rooms, etc, through it. And it will create things with the right permissions