This video demonstrates how to create a transition mesh between hexahedral (Hex.) mesh to a Tetrahedral (Tet.) mesh using Pyramid (Pyra.) elements useful when part of your geometry is possible to sweep mesh while other are not but you still would like to have a continuous mesh running through the entire structure.
Note that all the details of this command are available in the documentation in the following section:
Simcenter 3D Pre/Post - Meshing- Pyramid Element Transitions