Question for authentication

Hi everyone, I recently started using appwrite for my future SaaS application, and the platform is wonderful so far. However I just have a question in integrating the authentication process (I'll be using email and password for now so I can learn and get a better understanding). For the Account API, is there a way I can add more properties in it (assignments array, profile description, etc...), how does that work and I want to be able to push it into my user's collection? I'm using SSR integration. Sorry for bad grammar. Thank you