Requirements for site at Password Reset URL

I have set up user creation and authentication for a .net maui app, and it works brilliantly. I am struggling a bit with the reset password function. I have opted to use the “send a password reset email”

It then asks for a password reset url. This is where I get stuck. As I understand, this is the site that the password reset email will link to, and it will append a token to the end of the url. But I can’t seem to find any instructions on how to set up this page in a way that passes on the updated password and the token to Realm. Anyone care to point me in the right direction?

This may be an obvious thing to some of you, but I have very limited experience with authentication services.