learn english, or speak russian! You cannot make footman hero, but you can create hero with footman model.
Select any hero in units editor, copy and paste him. Set "Art - model" property of this hero to footman. Change any other properties you need.
How to make max lvl to more than 10: in world editor main window select menu "Advanced-> Gameplay constants...". Find hero max level and change this to 100 . 100 is maximum.