How do I make glass in Substance Painter?

MeshMagnet

I'm kind of at a loss as to how to approach a transparent object in SP.

Is there a checkbox I need to tick to allow transparency? Do I need to have an alpha channel assigned to one of my maps?

Jerc

Translucency support is coming up in a future update.

websta

I am brand new to Substance Painter. The first thing I tried was importing an asset I had previously made so I could have a look around the software. I imported some maps I had baked out of 3ds Max. The chassis has a texture and currently experimenting with existing maps and painting some bump etc. The elephant in this particular room is that the windows need transparency. I have diffuse, spec etc maps ready but no place to go? Soft is still great and there are ways of course to make these materials other ways by the time it comes to packaging stuff.
Thanks.
Great potential this software, enjoying v.much.