brandon: he'll hold you hand while you're walking out in public. He doesn't want you behind him but right next to him or a little ahead so he can see you.
edwin: he'll hold your hand while cuddling. He's big on doing so because he knows your close to him.
austin: he loves holding your hand. It's totally natural to him, he never know until you go separate ways.
nick: he holds your hand when he's scared. So he can know that you're there. It's the first thing he does. You'll know if somethings wrong instantly.
zion: holding your hands when he's looking for comfort. Or simply just wants to hold your hand. It fits perfectly in it (due to his big hands).