Missing edit button for plies after freesize optimization

Hi,

I have a problem with editing my plies after the free size optimization for composite materials. I am following the composite optimization with OptiStruct 11.0 on the example of a Formula-Student_Monocoque. On page 26 the tutorial shows a way how to edit the ply-shapes for later manufacturability. I have a student version of HyperWorks and I can not see an edit button. 

Is there any other way how to edit the plies ?

Thanks you

Kay