Answer:
There are various possibilities for applying loads properly in a support.
Since the support is not point-shaped in reality either, a rigid surface with the size of the support is suitable for the load introduction. Rigid members or couplings are also suitable here.
Image 01 shows an example where a member in the middle of a surface should transfer the load. In this case, the transition was modeled using a frame made of rigid members. As an alternative, you can use a rigid surface. However, it should be noted that it is necessary to use a cross of rigid members for the transfer of moments.
