solvation energy calculation

Hi everyone,
I'm trying to calculate the solvation free energy between propanoic acid and n-octanol. I was following a tutorial and after I built my amorphous cell, I was going to equlibrate the system using NHL thermostat, but when I go to Forcite module and change the task to dynamic and press more I supposed to see a thermostat tab but that is not activated for me and also I can't even run the forcite calculation. I'd be great full if anybody can help me this problem.