To set gutter margins for bound documents, follow steps:
Step 1. Open Microsoft Word document.
Step 2. Click the 'Page Layout' tab.
Step 3. Click the 'Margins' drop-down list and click 'Custom Margins'. (The 'Page Setup' dialog box appears.).
Step 4. From the 'Gutter' spin box, select the appropriate size.
Step 5. From the 'Gutter position' drop-down list, select the appropriate option.
Step 6. Click 'OK'.