You can setup territory flag poles to be PVP zones in PVEZ. So, they will need to build a flag pole somewhere in the center of the base, and the zone in certain radius around the flag will be a PVP zone.
You can set it up at ZONES settings page, in the bottom there's a button called TERRITORY FLAG ZONES, click on it and you'll get a panel where you setup radius, zone's border visibility on the map, and set the activity schedule. By default these zones schedule is set to never active, you need to set Days to 1234567 and EndHour to 24 to set them active 24/7.
Also, there's a checkbox "Active only when the flag is raised" which is checked by default. In this mode, the zone activity actually depends on the flag state (while the flag is raised (the height doesn't matter), the zone is active, when the flag is lowered to min position, the zone is not active. If you uncheck this, the zone activity state will be always active while the flag pole object exists in the world, even if the flag is lowered (but it requires server restart to apply it to all existing flag poles on the server).

Yes!!! That’s a perfect solution. Thank you.

Hey,
there is no checkbox in Gui "Active only when the flag is raised". What would be the code for the config of the zones ? TY