If you create a named selection, than you can refer to it just like in ANSYS classic. If it's a face, then it is a group of nodes and if its a solid body it will be all the elements. Use this in conjunction with the cmsel command.
Thanks a lot for your reply. Acually I want to check the number and shape of elements at a section. Usually I am doing that at Ansys classic with selecting the elements.In Ansys workbench, I have found the “New section” Icon with the “show whole elements” button in simulation .