Hi,    I'm trying to get my head around rooflights.  But I'm reaching dead ends.  I'd really appreciate more help.   1. I know that you must use 3d symbols.  In the resource manager how do I see which are 3d and which are 2d or hybrid?   2.  My process so far has been to drag and drop from the Resource Manager onto the roof, which then creates a dormer, I click on it and turn it into a skylight, it creates just a hole because cannot use hybrid symbols.  Where are the sym