Open the front cover of the multi-folding unit and take out the Z-fold support tray for multi-folding unit (located at the bottom of the multi-folding unit).
Set the Z-fold support tray for multi-folding unit in the slope of the multi-folding unit tray so that it is flush against the end fence.
Close the front cover of multi-folding unit.
When you have finished using the Z-fold support tray for multi-folding unit, open the front cover of the multi-folding unit and re-attach the tray to its stowage hook.