To adjust margins in Google Docs, follow these steps:
1. Open your Google Docs document.
2. Click on "File" in the top-left corner of the window.
3. In the dropdown menu, select "Page setup."
4. A dialog box will appear. Here, you can adjust the margins by entering values in the "Margins" section.
5. You can enter values for Top, Bottom, Left, and Right margins. The default unit of measurement is inches, but you can change it to centimeters or points using the dropdown menu.
6. After adjusting the margins to your preference, click "OK" to apply the changes.
The changes you make to the margins will be applied to your entire document. Keep in mind that adjusting margins may affect the layout of your document, so you may need to make additional adjustments to ensure everything looks as you want it.