When you have more firewall under you management domain you have more options to implements policy. Either you configure one policy package and within this policy package you create specific sections for specific firewalls or you create specific policy packages for specific firewalls. The first is good for small environment, the latter is more used.
If you implement more policy packages you have to switch between them via File – Open and choose your policy package. You can login via console to FW and check via command fw stat what package it contains.
You can also create a snapshot and restore it when needed.