Promotion chance happens once a week, you can choose to promote personnel who reached enough experience (their exp bar is full), otherwise they can't get a chance. So, when Jeneva reaches her promotion chance, you simply leave her as she is; she'll come in dean's office to talk about it and the dean gets his chance with her. Same for Gina,s boyfriend: don't promote him and leave him in training room until Gina comes and ask for his promotion.
Angela was still a work in progress in 1.6, have to check 1.9 if she's available.