if you mean an exact point, you need to use a split line or similar to develop a vertex to apply the force to. if you used in the intersection splitline with 3 planes you could build that point.
Depending on your intent, I may also distribute it over a small circle or the like. In reality there is no true "point load".
Some times people use soft "bushings" and apply a load to it that is then transferred with a contact condition.