You pitch a proposal

You gather everyone together and pitch a proposal in the spirit of spicing things up you offer to create a exact copy of any fictional character for each of your girls choosing

Dawn picks professor Sada a recent addition to the newset pokemon games but that doesn't stop Dawn from wanting her

Elaine picks Selene from Underworld do to them both being vampires and her lust for a fellow lesbian vampire

May picks Lucy from Fairy Tail your not sure why but you did say any fictional character so you let her choice stand

Marnie picks Lust from fullmetal alchemist you think to yourself that she choose well as you yourself have a thing for lust

And finally Cynthia decides on Yor from Spy X family your not familiar with the anime but you trust her tastes and leave it at that