Board Thread:Love Live! School Idol Festival Lounge/@comment-24094680-20160625190951

I want to idolise Minami Kotori but I'm not sure how to do it. I tried taking her out of my teams and have more than one of her, but I go to Special Practise and can't select her. Is there something else I need to do or something? As far as I know, you need two of a character card to idolise. I have two of the same Kotori Minami card and can't idolise her. Any advice?

Also, how do I unlock Private Wars by A-RISE? 