Clicking the Edit Columns action button will open the "Edit Columns" window.
The number of columns can be adjusted up to a maximum of four (4) columns in the row.
The Edit Columns function allows you to change the position of the columns as well as set their relevant size for common viewport sizes (phone, tablet, and desktop).
Each viewport column size can be set using the selector from a pre-defined list.
You can mix and match the available sizes to create more diverse column layouts aside from the standard equally divided space.