How to implement UI/UX for global and local roles?

We have a web app with organizations and departments. Users belong to organization and each of users works in one or multiple departments. There are editable sets of roles (there are up to 50 permissions in the set) - user have role for each department he works in. And there is an admin role that allows to create users. So, user is an Admin in department, but can create users for whole organization - local permission that affects all departments. That is misleading for users. We considered to split roles into global and local, but we are not sure if it is good idea.

What are possible solutions for UI/UX in this scenario? How to show all permissions to user and explain that some are global?