They'll have to be in their own rooms or if they're a VIP, they have to be at home.
But what button do I press? is it somewhere on the card thing? if so I cannot find it.
Yeah, it's an option on their face icon, a clothes hanger. Make sure they're in their room, if you still can't see it, it probably means you need you to progress the story a little more, it unlocks at chapter 3 for all of them.
