The P

 Goal(s) :

Lead from a distance - Back up

 Process :

The horse is facing its rider, the rider asks for a back up from a distance then sends the horse behind the furthest barrel. The rider then asks the horse to pass between the two barrels and return to them.
The difficulty can be reduced or increased depending on the distance between the rider's area and the barrels, as well as the spacing between the barrels.

 Difficulties :

Direction from a distance