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.

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.