It's up to you, but this is how HitchSwitch defines the various address fields on our EasyForm:
Permanent Address: the address that will be reflected on your new driver's license, bank accounts, etc.
Mailing Address: the address where the various agencies will send your new documents like your passport, driver's license, credit cards, etc.
Shipping Address: the address where your HitchSwitch will be sent (e.g. your office)