Divided Lite French Windows

I'm planning on using your Divided Light Cabinet Door Router Bit Set (#55360) to make some exterior architectural windows. I'm a cabinetmaker and have little experience with door making - we always order out. Looking at the website I understand how to join the rails and stiles of the frame and how to cope the mullions and muntins to the frame but my question is: how do the mullions and muntins interlock? Is there additional machinery I'm going to need (like some sort of press) to make that joint possible? Or is this set all I need to fabricate the entire door (minus the mortises of course)? Thanks for your time.

-Chad

Baton Rouge, LA