Warhammer 40k to Warhammer

I have been playing the warhammer 40K module on vassal recently and I wanted to play Warhammer Fantasy. I had noticed that there was a Warhammer Fantasy skirmish module on the site but it was banned and I could not find it anywhere else, so I thought I could just make Warhammer Fantasy units on the Warhammer 40k module. My issue with this is that I’m not entirely sure how to do it… I am new to vassal and have been able to pick up some things that the makers of the module did that I can just copy and paste to make new units but there are some things I am unsure of. If anyone can help I would greatly appreciate it!