Serving the Pharaoh as brigade or command leaders were his personally appointed army viziers. Like Pharaoh they could be used as attached to a unit of chariots or not (unattached). The viziers report directly to the Pharaoh. They too are represented by a single chariot model stand. They add a bonus of plus 2 when attaching themselves to another unit. Like Pharaoh they command a division or brigade identical to that of Pharaoh's. That is to say a core of heavy infantry spear men and a matching unit of archers supporting the heavy foot. In addition to this there are a unit or two of chariots. For me I have assign 4 chariots to each division. One chariot model represents the vizier (command leader). This leaves 3 chariots. I like to use chariots in pairs. I could though use a unit of 3 chariots. However I like to have one unit of 2 chariots and then a single chariot model unit. I can always attach the vizier model to the single chariot model unit during a battle. Chariots shoot and melee as 5 figures each model.
Left is a vizier unattached to his divisional chariots. I prefer not to use such large units; using them in pairs each with a unit commander. I like the smaller units as they have greater mobility. By using smaller units I have more chances of shooting-yes more rolls but statistically if you roll like I do you will need as many chances as possible. This also gives your opponent more targets but this distributes the casualties and takes more time to destroy these very valuable elements of the army.