Staple

Select the original you want to print.

Select [Print...] on the [File] menu.

Select the printer you want to use.

Select [Printer Features] in the pop-up menu.

Select [Paper] in "Feature Sets:".

Select the output tray to deliver the printed sheets in "Destination:".

Select [Finishing 1] in "Feature Sets:".

Select the staple position in "Staple:".

Print the original using the print function in the default application of the original.