Thanks guys!
I am sorry to say that gate will remain public, no matter what I do to prevent it. I even edited afcad config files to add a new company (you guess which one), and to reserve the gate usage to it, but no go...

As U can see here from the AFCAD screenshot:

Blue ones our ours(E1-heavy, E2-med, P18-open hangar from previous post)
Parking users window only adds users, does not prevent all the others!! I.E. If I select, say 'Eurofly' from the drop-down, their callsign will only appear on the list, it will not make the gate their property!!
So, every gate and park is available to all.
Unless, some EHM AI traffic guru can make static planes at our positions (which I think is possible)
.....
Manu, I had your idea in mind and it will be done, if the addon becomes EHM official, all support and instructon files will surely be included.
As I discussed with Gergely, will it work with other LSZH addons? I can't tell, I don't have any..
Will it work on FS2k2?
I doubt it, because of AFCAD2 being used.
All other stuff is in range of normal, it's not CPU intensive, no frame-rate drops, etc.. textures are at 1024res with DXT1....
Now going back to work, I can't wait to make a flight from it!
Cheers all!