Kendo UI GridColumnMenuColumnsSettings class
The sort order which will be applied over the columns list. By default, the columns menu items are in the same order as the columns in the grid.The supported values are: "asc" (ascending order) or "desc" (descending order).
If set to true the column menu would allow the user to select (show and hide) grid columns. By default the column menu allows column selection.
The user defined groups of the columns visibility list.
Serialize current instance to Dictionary