In case of lawful IDs engagement lines are literally done by adding faction into enemies in laws, it's as simple as that, and needs to be staff approved.
But there needs to be roleplay for that - Liberty has done zero RP in regards to Gallic Union, nothing public, and their hostility is only visible by LN and LSF, which adds engagement lines, and which makes it problematic for Union to automatically reciprocate and add their engagement lines, and for NPC faction reps to follow suit.
Code:
Within Zone of Influence: (Gallia, systems directly bordering Gallia, Cologne):
- Can attack ships belonging to factions considered hostile by Gallia.
- Can enforce Gallic law.
GSB diplomacy has nothing to do with who they can and cannot engage, it's all on Gallic Laws that staff has to approve