Role based authentication with express,react,graphql

Hello, I need some help with role-based authentication with react and express, I used Passport-local strategy for the authentication it works well for “normal” users, but I don’t know how to do it for admins and I also need to have another type of users who will have protected routes, admins also, of course, have private routes, I searched on google I can’t help finding something with the MERN stack and Graphql.