New Hampshire Licensure

What is the process to get licensed in NH if you are already licensed in a couple other states?  I tried looking it up on their website, but I'm having trouble finding a direct answer.  Do they have a comity process?

Follow-up question: How difficult of a transition is it for a midwest PLSS surveyor to get licensed and/or practice in NH?  I'm assuming I would be working under someone already licensed/experienced there, but other than everything being metes and bounds, what else is there to be aware of?  I've worked in Vermont a little bit (several years ago), so I have a tiny bit of relevant experience.