[quantum_mechani]

I'm guessing you're asking how to script a mage for battle. Click army setup, then the 'Click here to set battle orders' button under the mage you want to script. Then select 'Cast a specific spell'. You can select spells in this fashion up to 5 times. Then select attack, cast spells, retreat, or stay behind troops, for him to carry out once he has cast his 5 spells.