Context menu in the header

Make the following settings in the context menu of the header:

Duplicate Column

Duplicated the column under the cursor.

Duplicate Selected Columns

Duplicates the selected column.

Insert Empty Column to the Left

Adds an empty row at the left of the clicked column.

Insert Empty Column to the Right

Adds an empty row at the right of the clicked column.

Delete this Column

Deletes the column at the cursor position.