How to apply a point load/line load/Torsion/shear force to a 3d beam?

Hi, I am new to dolfinx/Fenicsx. I want to know how to apply a point load/line load/Torsion/shear to beam of the example of Tutorial “Linear Elasticity” ? In the example it’s the f the force and it was applied in the whole body(mesh) of the beam as the dead load of the beam itself. I tried to look for answers but since Pointsource is removed I don’t know how can I implement a point load. And for other kinds of load I mentioned before there is no relative answers for Dolfinx/Fenicsx.

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