Добавить в scenery.cfg:
[Area.???]
Title=Imagine Simulation - WSSS Singapore Changi Landclass
Local=Imagine Simulation\WSSS Singapore\Landclass
Remote=
Required=FALSE
Active=TRUE
Layer=???

[Area.???+1]
Title=Imagine Simulation - WSSS Singapore Changi
Local=Imagine Simulation\WSSS Singapore
Remote=
Required=FALSE
Active=TRUE
Layer=???+1