Numbers

Use alignment guides in Numbers on iPad
Use alignment and spacing guides to help you place objects precisely on a sheet. When guides are turned on, they appear as you drag an object on a sheet in alignment with, or equidistant to, another object. You can turn the guides off and on as needed.

Turn on alignment guides
Go to the Numbers app
on your iPad.
Open a spreadsheet, tap
, then tap Settings.
Turn on one or more of the following guides in the Guides section:
Edge Guides: Appear when an object’s edges align with the edges of another object.
Centre Guides: Appear when an object’s centre aligns with another object or the centre of the sheet.
Spacing Guides: Indicate when three or more objects are placed equally apart in a line.
Tap Done.