I am conducting stress analysis on aircraft wing and i have to apply a load in such a way to generate bending moment and torsion on aircraft wing. one end is fixed and on the other end, I am trying to use a coupling constraint with the master reference point coupled with the face on one end. But i am not clear how to apply a force on reference point to generate bending moment and torsion.

i have uploaded the geometry with he applied boundary condition and load. Please have a look