If I’m registered on a particular instance, say feddit.uk and I want to create a new community but it doesn’t particularly fit on the instance on which I’m registered, am I able to create a community on a separate instance, say lemmy.world or do I have to first register an account on lemmy.world?
You can’t create communities on other instances from your instance, but what you can do is you can create an account on that instance, create the community and transfer ownership to your current account or you can ask somebody nice on that instance to create the community and transfer the ownership to your account.