Thanks for all the input, all good! I managed to find the original TMCC command set box under the layout, and dug out the manual, complete with a couple of moths and spider webs! Haha! In it I found the lashup procedure as you said Mike CT, so I'll play with that a bit.
I have done lashups previously with DCS, but never with TMCC/legacy, so we will see how it goes. It's not something I normally do for sure.
Rod