If you want to show them you pluck instead of trimming. Trimmed/cut feathers do not grow back until their next molt. If you pluck you will have 6-8 weeks of fertile egg then the fertility drops as the feathers grow back. They do look a little rough for a while.
You pluck/trim the male around his vent and below. Probably farther than you imagine. You want it so his feathers can not bend back and up to block the vent area. Just keep checking as you go.
You pluck/trim the female around the vent and above. You keep checking as you go. Again you go higher than you think. Feathers should not come down and block the vent area.
Good Luck
Craig