Restricted use of Admin API for selected users

Is there an option to allow a user only certain actions in the Admin API?
E.g. I want a user who only can add and remove specific roles for other users.

At the moment I’m using Keycloak v20.0.0. There I found “Permissions” under Role settings, which throws a NullPointer Exception on the server, if I try to enable it. I checked out 21.0.1, where “Permissions” was removed.