Hints:
IP can be empty, meaning any IP will match.
You can use both IPv4 and IPv6. Some examples: 4.4.4.4, 1.2.3.0/24,
2001:6:3456::/64.
Priorities are used to order the rights. They are evaluated top to bottom.
and must be greater than 10 and lower than 30000.
To add a deny rule, just do not select any right; if matched, the evaluation
of the following rules will stop.
Here you can add generic rights for your co-workers / friends.