I mean you can made them transparent so you can see the passengers boardin9/deboarding.
That's of course possible using the parking editor to change the jetway type. It's of course explained in the manual, and there's a couple of video tutorials posted in this same section of the forum.
I don't see the possibility to open the follow me car.
As explained in the manual, the Follow Me car is chosen when selected a Gate after landing, which of course is the time when it make sense to need one.
And my friend is 85 years old and certainly not a beta tester cause i have to help him with his comp.
If he's not a tester for FS Labs or for FSDT, then someone who is gave him access to our beta installer, because that's the only way he could have the Fuel Hydrant in GSX.
Assuming, of course, it IS the Fuel Hydrant what you are seeing. If you are seeing the Fuel Tanker instead (it still has a guy that handle the fuel hose, just not as nice as the new Hydrant), that's normal and it's included with every GSX installation but, of course, it won't fit any airplane so, if the airplane refueling point under the wing is too low, the Fuel Tanker won't come.