ok I give up the "moderator "knows" better!
I think you mean the guy with two Meade scopes has experience with working with Meade on problems.
I have a Meade StarNavigator NG102 Go To telescope with Audiostar. Under the telescope info section in the Audiostar handset the NG models aren't listed, just the pre NG models which have different focal lengths.
Does anybody know how to add a different telescope model and it's focal length into the Audiostar handset please. The Meade website is useless.
Now, as to setting the scope. Most likely you don't have to select anything. It should come from the factory preset for your scope. Only if you are going to use this handset on a different scope would you likely ever need to touch the mount or scope type.
But let's go over it just in case.
As we said, the focal length and aperture don't matter to the operation of the GoTo mount.
On Page 26 of the manual you have the menu structure for the Audiostar system.
What you are looking for is under set-up. This is where you can change the mount. It is highly likely, I would say 90% or better that it is already set to the correct mount and there is nothing you need to change. So, unless you have a problem with your alignment, don't mess with this.
If they have the Star Navigator but not the NG, just select the Star Navigator. Highly likely that will work just fine.
If and only if you have problem getting the alignment right and have followed ALL the instructions step by step, will you may need some help from Meade.