Helpful Tip
While you can use the visual editor for setting up your button, The Coda School prefers to always use the formula editor.
The more you become comfortable with the formula editor, the more flexibility you will find in terms of the actions you can set up.
One other immediate benefit is that if you are looking to modify rows in a doc with a large number of tables, the formula editor lets you search for the table name while the visual editor for a button forces you to scroll through them all until you find it.