Do you need to add scopes manually on Application Settings page?

I’m getting an “Authorization has been denied for this request” error with React Native, and am wondering whether there’s something wrong with the list of scopes I’m passing to auth0.webAuth.authorize(). I noticed there’s a section on my Dashboard in the APIs tab under Permissions that says “Define all the permissions (scopes) that this API uses”. I haven’t added anything here. Does anyone know if I need to add all the scopes that my API uses, or if it’s ok to leave this blank?