I understand how to use the snap tool to add a guide at the midway point of a file.
So if my picture is 400 px wide, a guide will snap at exactly 200.
But I want to divide my image again, and have a 2nd guide snap at 100. (so that it snaps at the halfway point between the start of my doc and the previous guide). Then a third guide to snap at 50. (It’s simple with 50, 100, 200, 400 but is too hard to do manually with odd numbers). Can this be done? Thanks !