Redeploy unit (s) / army wing at set up - how?

[Plantagenet]

Seen this mentioned a couple of times, the last being in the Crusader podcast. There was some discussion when the first list was discussed where Richard (IIRC) mentioned re-deploying one or more units (maybe a whole wing?) after they had already been placed during the deployment phase.  Where does the ability to do this come from?  Is it tied to specific army lists or generals, is it in other ways related to the quality of the army commander and / or generals or is it some special rule I've missed?  Starting to read through the book again today, cover to cover as it's been so long since we played, any pointers as to where I might find this 'ability' would be useful.

[lionheartrjc]

It simply means moving them during the battle from one side to the other.  Nothing special in the rules.

Richard

[Plantagenet]

It simply means moving them during the battle from one side to the other.  Nothing special in the rules.

Richard

Oh right, I'd misunderstood it then.  I thought it was something similar to a DBMM Stratagem that allowed you to pick up unit(s) and reposition, rather than standard movement during the course of the turns.  Thanks.  Wondered why I couldn't find it in the large index document LOL.