I have a Paladin and a Cleric as part of a 4 member party. When I use turn Undead - do I just have to stand still and not move? Or can i move around but just not attack? My Paladin is also my main melee pain dealer so if he cannot attack while in Turn undead mode, I will have to rely on my Cleric. Thanks for any tips.

From what I remember, moving or attacking cancels turning, so you'll want to use your cleric for turning while your paladin helps maintain the front lines.

You can move around, but you can't attack or cast any spells.

Tip; Have the cleric cast ‘Sanctuary’ before she starts turning.

IIRC, as long as the Turn Undead icon is active your character is using the ability. It won't be nagated by just moving.