Often we do on weekends coffee for 60+ people. No ... not all our family, or actually does it? Well our club. Anyway, I can say that the machine does exactly what it should, if the operator knows and takes the trouble, use the amount of coffee powder which is necessary for holding the number of cups. It took me a couple (shoveling sand) purchased for the amount of 30, 60 and 60 cups. Since everyone can then neatly in the sand ... uh ... play coffee and build his castle coffee in'm round filter. So if more than one person to operate the machine, tinker a Quick Start Guide, so that the coffee tastes.
It would be a pity if after an hour early (60 cups) of coffee then is finished -> for the sink instead of the cup.