You have taken the right aproach. You only need to wait for a few days more. Anger went down daily, I don´t remember now if 1 or 2 points. If you keep making a Pool party daily, when their anger have gone down to zero must possibly they will be on "uninterested", and they will raise your stability at Zapin Field.How can you add workers to remote production building ? You can't just add captured bandit there, they are Despising and around 8 Anger, I can spend 2 days or more (dinner, pool party) to increase to Unfriendly+ but Anger is still a headache, it reduces stability a lot - I currently invest in Zapin field.