OK Greg. This does pause and allow me to load and unload filment, however there is a small problem. When it reaches the pause layer, it lifts the head (as it did before) and parks at the x,y i chose. But after 5 seconds or so it then parks at the original longer setting at the rear of the bed and x0. but it also remains at the layer height, which wouldn't be a problem if i was changing colour at say 10mm height but at 2mm I can't get the filament to ooze from the nozzle easily.
Is there a way to overcome this so the z height is lifted at pause?
Thanks for your patience, I'm not a 3d pro.