Vehicle importer wizard generated part configuration file
resource ID of this part: 0x00001027
resource alias of this part: "trunk"
slot -0.153 0.219 -0.53 0.000 0.000 0.000 491 ; D-Max Sun-Shade
So the slot in the "D-Max Sun-Shade" cfg will be
Vehicle importer wizard generated part configuration file
resource ID of this part: 0x00001273
resource alias of this part: "DMax_roof_wing"
slot 0.000 0.000 0.000 0.000 0.000 0.000 491 ; D-max Sun-Shade
attach 0x00001027 491 ; trunk->D-max Sun-Shade
Just have to add attach line with the ID of the parent part. Or u can make the attach line in the parent part with the children part ID there.
I've cutted a lot from the cfgs but you should get it