How do I set up margins in the Numbers app?

Set text margins

1. Go to the Numbers app on your iPhone.
2. Open a spreadsheet, then tap a shape or text box, or select specific text.
3. Tap. , then tap Text.
4. In the Margin section, tap. to decrease or increase the margin, or tap the margin size and enter a new value.

Align text in Numbers on iPhone - Apple Support (IN)

Set margins

1. Tap. ... 
2. Tap More Options at the bottom of the controls. ... 
3. In More Options view, drag the double arrows on the top, bottom and sides of the document to set the margins. ... 
4. When you've finished, tap Done in the top-left corner to close More Options view and return to the document.

Set document margins in Pages on iPhone - Apple Support (IN)