PBF is based on node access system. So if you put 2 locks on a node (a lock per group and a lock per category), then user can access the node if they have only one lock. You should set a PBF field only on the field category, and use instead a normal entity reference field to associate node to group.
PBF is based on node access system. So if you put 2 locks on a node (a lock per group and a lock per category), then user can access the node if they have only one lock. You should set a PBF field only on the field category, and use instead a normal entity reference field to associate node to group.