Try adding numbers to your valves with a sharpie and make a chart of what happens when you move each handle (one at a time) until you figure it all out.
It can be confusing to track all the changes you make
So, if you started with valve #1, what happens with the handle in position A? (write down what you see or hear), B?, C?
Work you way thru the valves. Be careful some of the positions may have undesired effects.