If you are using a washer, put the washer on the bottom die first. IF the washer has a slight bevel to it, put bevel side facing up (similar to saucer for a cup of coffee)
Place your work over the bottom die and cycle the machine. The machine will cut a hole in your material & force it down on top of the pilot of the bottom die.
Place your eyelet or grommet barrel side down on the bottom die pilot.