User Guide
Confluence Browser People Permission
If you are a person who doesn’t have permission to view the “People Directory”, you could not see the button “People” in the top menu. And when you try to access the link “…/browsepeople.action” you will see this page:

Confluence Space Mentioning Permission
If you are a person who doesn’t have permission to mention the people who have at least View Space permission on this space, you could not search for the users by using the “@“ sign or using the user macros
