How do you create a pattern in Illustrator?

Create or edit a pattern
  1. To create a pattern, select the artwork that you would like to create the pattern from, and then choose Object > Pattern > Make.
  2. To edit an existing pattern, double-click the pattern in the pattern swatch, or select an object containing the pattern and choose Object > Pattern > Edit Pattern.

How do I create a pattern in Illustrator 2020?