Hey again chuskito,
You don’t have to know that in case you’re going to use premium version, add-on allows you to set rules for specific parts in the admin for specific user role.
So for example once you activate Administrative Permissions you’ll see the following in Appointments -> Settings -> General -> Appointments Role Access https://screencast.com/t/w1MlcYOb, if you add your new role (I’ll add contributor in my example) to have access for Appointments page, this will be the only part this role will have access to.
So with the settings as above, this is what contributor is seeing in the admin https://screencast.com/t/7xer8k7AovAB. As you can see access is only set to edit appointments and not other plugin settings.
Hope this helps ??
Cheers,
Bojan