What is the protocol for multiple hour appointments. What I mean is, if its one hour is it one pop, 2 hr for 2 pops, 3 for 3, etc.?

An hour or two is clearly all bcd or private time, whereas 3 or 4 hours are usually viewed as dinner dates, in which the time is half and half. Just make sure the provider offers MSOG or Multiple Cups in her hourly rate...some do, and some don't.

If you book 90 min. with me, you get 90 min. end of story. I don't much care how many pops you get in that time, but if you can't get more than one and it goes over, not my fault.

it all depends on you and the lady..check and see if she is MSOG on her reviews..some guys are one poppers no matter how many hours they book..others can pop 3 or 4 times in an hour..know what your capabilities are..a good provider can adjust to it very readily..they have seen it all..

One, her policy on multiple pops, which as it has been said already, you should be able to tell from her profile.  Two, how many are you capable of in a certain amount of time.  Many of us older guys, myself included, are happy to get one good one in an hour.  I have been able to produce some dry pops following the regular one, feels good, just no ejaculation.

Swim

and see what her sessions are really like.
HV

Very few guys can look at each hour as a pop.  I'm sure they would like to, but the reality is that multi-hour appointments are a lotta talking and foreplay, and then the actual number of pops is totally uncorrelated to the time.

I have had three-hour appointments where I popped once, and one-hour appointments where I popped three times.

provider's reviews. This will answer the question for the lady you are hoping to see.