I can manually:
- select a vertex in edit mode
- snap the 3D cursor to it
- make an empty there in object mode
- keep the empty selected, select the mesh, enter into edit mode
- press Ctrl+P to create a vertex parent for the empty
Now the empty follows the vertex, even if it has some cloth physics applied or something else. The basic procedure. Very handy.
BUT, How to select multiple vertices in edit mode and press a button and:
- have empties created for each selected vertice's location and
- respectively each vertex to be the parent of its empty?
( This might help, investigating: https://blender.stackexchange.com/a/209262/8282 )