As in any other restaurant, what the customer wants to do is to place an order, preferably without ordering the same ingredient twice. So if you have fruit in the first course, you don't want to have fruit in the second course - especially not the same fruit. Ditto fish, and so on.
At Cheerful Charley's, you place your order by selecting one item from each course. Just mark your menu by clicking the button beside each item you choose; that's all you have to do.
Try ordering a meal to get a feel of it, then assess this sytem from the point of view of Cognitive Dimensions. Then do the same at Disobliging Dave's, if you haven't already.
(By the way, this isn't a game. You don't get a score or anything. You're not trying to beat the machine - what you're trying do is to get a feel for using the cognitive dimensions.)