Quantity is absolutely controlled by time and concourses.. From 4 seconds to 150 seconds in time. If plate spacing is giving you the right coarseness, timing is adjustable. First adjust the coarseness of the grind is correct. To fine slows the coffee threw the filter.. To coarse waste coffee. Then adjust the volume with the timer. Not knowing if you have the digital or manual timers, I’ll include a manual for you to reference. Page 8 has your adjustments.