Google Auth sign up (weweb/ supabase)

Hi all - im just adding the ability for users to sign up with google auth. Google Auth works well and was pretty easy to set up. However, my app has 2 user roles (clients, customers), each with their own registration page. How would i able to communicate to my back-end (supabase) which form each sign up came from and assign them the correct role on registration?

Would be extremely grateful for any pointers! Thanks, Waq

Context - The above is currently achieved with the metadata field in supabase auth plugin.