You need to use the crop tool.
Thanks so much for your reply. I feel like a fish out of water. I have gone to the crop tool, and it says to click and select area and then double click to crop.
My document's left margin is now 1" and I need it at .5. My right margin is fine at .5. By cropping the "space" on the left, it will reduce the margin?
up please ?
IF you have the same problem, the solution is the same. Please let us know if you have any problems with using the crop tool.