"I wanted to ask, is there any plans for a "wait" action, or something that tells you where the other Candidates are?"
No plans for this, you'll have to look for them.
"It also happens when i'm trying to talk them up for a relationship, since there's no "one on one" talks"
Once you've unlocked following interations, you can take one of them to your room, where the other characters won't be able to follow you.