Have you used the detail tool? If so when your import you ArchiCAD pln you will be able to import your details as well. This is the best way.
If not, you can copy your existing wall elevation, as many times as you like whilst in Plotmaker, then while you have your drawing marked you can move the contents of the selected window around, until you see the next part of the drawing that you want to show.
Although this is definitely
NOT the best method.
You should try to use the detail tool in ArchiCAD.
HTH.
Cheers.
Ben