I mean, most spaces have those as roles that you can fill in, but don't have to. wrt pronoun roles, they are used for figuring out how to refer to you -- it is after all, a trans space where appearance and expectation won't match up with people's preferences, and where people are tired from the water-drip torture* that is constant implicit and explicit misgendering.

* - that is to say, each individual instance (drip) wouldn't cause pain, but when you face it almost constantly, and you're already hyperaware of it, it can cause a lot of anguish.