Kenmore elite dishwasher. I have had my dishwasher seviced before and know what the problem is but

Question

I have had my dishwasher seviced before and know what the problem is but I can not get to the part. What I need to know is how do you take the last part of the machine apart to get to where the pump/food grinder is. I know this covering comes off I just dont know were to push/pull or what ever you have to do to remove it. HELP PLEASE!!!!!!!