If you decide you need a UI, even if it's not for creating/editing role/permission names, but just for controlling which Users have access to which roles/permissions, following are some options to get you started:
FilamentPHP plugin to manage roles and permissions using this package. (There are a few other Filament plugins which do similarly; use whichever suits your needs best.)
If you'd like to build your own UI, and understand the underlying logic for Gates and Roles and Users, the Laravel 6 User Login and Management With Roles video series by Mark Twigg of Penguin Digital gives thorough coverage to the topic, the theory, and implementation of a basic Roles system, independent of this Permissions Package.