Protected Resources can limit access for users or create access groups.
By adding a protected resource to a tag you can limit the users that have access to use and view the data under that tag/sub-tag category, thus you can use it as a limitation tool or as a tool to create groups of users that should view and use specific plans and tags.
Note, if you add a protected resource under plan tags this plan will only be visible to those users with the correct access rights under protected resources.
Manage all access rights under Users & Roles.
Enter the user profile through Users & Roles, then search for the user name/email address in & enter their profile by clicking at the user name/email address.
From here you have the option to allow full access or limited access, limited access allows you to manage protected resources for that user.