People were kind enough to help me with a scaling question but the answer lies in using viewports and am having some difficulty/confusion. When I go to a sheet there is already a viewport defined but I would like a different sized viewport (larger). I have tried to delete it but cannot get grips to show up or anything else along the visible edge. Separately, I can create another viewport (larger) of the desired size but then I'm left with two concentric viewports. I can shrink or pan the undesired image from the small viewport out of the way and just use the image in the larger viewport but this doesn't seem to be a clean approach. Help.