Hi there! You can use our guide to the canvas or frame, please check our help center article here: https://help.figma.com/hc/en-us/articles/360040449713-Add-guides-to-the-canvas-or-frames

In order to use guides, you will first need to enable rulers on the canvas.

1. Click on to open the main menu.


2. Go to View > Rulers.
   
   You can also enable rulers by using the keyboard shortcut Shift + R, or by using the quick actions bar (https://help.figma.com/hc/en-us/articles/360040328653-Use-shortcuts-and-quick-actions#Quick_actions)
   
   

Hope this helps!