To set your desired page margins, click on File and select “Page Layout”. You may also click the “Page Layout” button in the Tool Buttons.

Either option will bring up the Page Layout menu, where you can set margins for both first page and subsequent pages.

The drop down menu at the top allows you to choose the page size, which defaults to 8.5 x 11 inches.

Click “Save” once you have set your page margins.