Good morning ... Maybe I'm missing something, but making an em dash seems quite straightforward. A lot of fonts contain it in their set of glyphs and revealing it is the voodoo. It works by hitting the Option (Alt) key and the ordinary dash key. I have not tried this in Scribus which lives on my Ubuntu machine, but in every Mac application I've used where I've wanted an em dash, that's how I got it.
Happy dashing ;-) Elaine in Brisbane, Australia
