How do you lower the convertible top

This is a convertible how does the top come down and go up and is there a secrete to getting the top to latch, does the motor have to be on? I purchased this car the other day while it was pouring down rain and today was the first opportunity to put the roof down I got it unlatched but could not figure out how to get the top down. I had trouble latching the top back until I stared the car not sure if this was need or I just got it to lock.