Wings of the Jungle: "The spell affects only a single unit, never a brigade. The unit can be moved just as if it had received an order in the Command phase".
Same wording for Voice of Command, Lady's Favour, Vanhel's Danse Macabre, and Hunting for Gore.
If a unit is ordered to move in the command phase, the following (p44) applies: "a unit is allowed to make a supporting charge if it positioned behind another so that at least one stand could theoretically support in combat. If the front unit charges, whether on initiative or by means of an order, the second unit can automatically make a supporting charge."
So, the spell(s) allow a normal charge for a unit and, during a normal charge, a unit would bring its supporters with it. Seems pretty straightforward to me.