Uni Jetstream 2&1 Pure Malt 2 Color 0.7 mm Ballpoint Multi Pen 0.5 mm pencil combo Dark Brown,Nano Dia 0.5HB Pencil Lead + 2 Ink Refills set(Black,Red) and Our Original Sticky Notes

There are no instructions. I haven't been able to figure out how to insert lead into the mechanical pencil. This makes the product useless to me. It's purpose is to be able to quickly and easily switch back and forth between pens and pencil - impossible without lead in the pencil. Why are there no instructions?