I tried myself with configuring the A and B Passenger Gates at Hollywood Burbank Airport V2 from Orbx.
All gates are configured as WALK IN GATES with custom walkway, vehicle placement and pushback routes.
NOTE: You need to change the AFCAD path in the configuarion file to your path as it may differ from user to user.
Config file needs to go here (by default) ---> C:\Users\[...]\AppData\Roaming\Virtuali\GSX\MSFS
If you have any issues or suggestions pls don´t hesitate to let me know.
Cheers
Pascal