Left side: paths on to which access can be granted.
Right side: emails of users that can access a select path (enter * to allow everyone access without login; enter *? to allow everyone access but still require login).

Granting access to a path gives also access to all sub-paths unless a more specific access control rule is defined. The more specific rule overwrites a more generic one.

visit a location in a separate tab.
compose a notification about a shared location.
remove an access control list for a path (left) or remove a user (right).

Move a mouse over a user to quickly check which locations the user can access (marked with ).
grant a user access to the currently active location.
compose a notification about locations shared with a user.
remove a user and disallow the removed user access to all locations.