How do I make a checklist in pages?

In the document, make a list of items to be checked. Select your list and go to the Format Pane to the right of the application window and look down to "Bullets and Lists." Click on the dropdown, select "Image" - click the caret dropdown to reveal the bullet settings. This will allow you to format your list with different types of bullets, spacing, and size. It even allows a custom image to be used.