The way the monuments filter works is that whatever you have set in "Allow Players to Call Bradleys at Monuments", the list is an exception list. So if you have "Allow Players to Call Bradleys at Monuments": false,
Any monument prefabs you have in the list will allow players to drop there. eg:
"Allow Players to Call Bradleys at Monuments": false,
"Monuments (Prefabs) to Either Block or Allow When Allow at Monuments is Either True or False": [
"assets/bundled/prefabs/autospawn/monument/large/airfield_1.prefab",
"assets/bundled/prefabs/autospawn/monument/large/powerplant_1.prefab"
]
The above would block all monuments except airfield and powerplant.
Now, if you have it like this:
"Allow Players to Call Bradleys at Monuments": true,
"Monuments (Prefabs) to Either Block or Allow When Allow at Monuments is Either True or False": [
"assets/bundled/prefabs/autospawn/monument/large/airfield_1.prefab",
"assets/bundled/prefabs/autospawn/monument/large/powerplant_1.prefab"
]
All monuments will be allowed, except airfield and powerplant.