I do not have the option to select "composite" from the shell difinition property manager. Only the options thin and thick are there. I am under static simulation for a surface, and composite is just not an option under shell definition. I even went to the tutorial about static composite shells (in the simulation tutorials), and opened up the sample part "T-Joint". Again here I still do not have the composite option that the tutorial would like me to select. Even for the two completed parts Ready-8 Plies and 16 plies the option is not there if I try to change their definitions. I can only see thick and thin.