Describe the solution you'd like
There should be an option to set the necessary operator level in order to override the grave protection.

Perhaps a value of -1 should turn off the override entirely?

Commit cd290cc resolves this:

Players can now choose what OP level is needed to override grave
protection:

1-4 = valid operator levels
0 = every player can (just enable grave robbing lol)
-1 = disabled (no one can)

Closing this issue.