This is the default tab that appears when theColumnsbutton is clicked. Design elements (i.e. views, folders) are shown side-by-side in columns, with each cell being occupied by a view column. The first column is reserved for shared columns.
In this tab you can directly apply columns to several views and folders all at once. With viewEZ you can move, copy, paste, edit, delete columns: Manage all of your view columns in a single table.