Navigation:  Calculation Modules > Analysis > ENERCALC 3D > Ribbons > Create > Shell Properties > Shell Properties

Create (or Modify) > Shell Properties > Shell Properties prompts you with the following dialog.

 

 

 

It allows you to assign one or more properties such as material, thickness etc to shells.  Make sure the “Use” checkbox by each property is set correctly.  After clicking “Assign”, you can start to continuously assign all checked properties by window-selecting shells until you right click the mouse or press the ESC key.