A point of frustration with Numbers users is that Pop-Up Menu cells must be populated with a list of typed values. Often it is useful to get these values from another table instead. While there is no easy solution, you can simulate a dynamic pop-up with a special technique that involves creating the Pop-Up Menu in the second table and pasting it into the first. This method requires a manual update of the Pop-Up Menus when the selections change, but can handle large lists.
Want to know more about how to use Numbers on your Mac? Check out this MacMost course!
Thanks for this video, I had forgotten how useful Pop-Up menus can be.