Change page margins:
1. Go to Layout, Margins.
2. Select a predefined option - Normal, Narrow, Moderate, Wide - or
Select Layout, Page Setup to set custom margins.
Set default margins:
You can change the default settings, which will be used for any new documents.
1. Go to Layout, Page setup.
2. Select a predefined option - Normal, Narrow, Moderate, Wide - or
Select Layout, Page Setup to set custom margins.
3. Select Set as Default.