If you click Custom margins ... The program will open the set up page, in the menu, the margins can be set on the bottom, left, right, as needed. If the gutter on the left side On the left side, it should be set to rise.
If you click Custom Margins. The program is open Page Setup In the Margins Can be set on the lower left and right as needed. If the left gutter Particular, it should be set up with.
If you click Custom margins program will open the window, set the page in the menu margin can be set up, down, left, right, as needed. If a staple on the left. The left should be set up.