bushnell tactical scope help!!

Hello I just purchased a bushnell elite 3200 5-15x40 with tactical turrets and i think i bit off more then i can chew. The scope came with no instructions on how to use the turrets I have no idea how to zero this scope in and keep the zero. I placed it into a rifle scabbard and when i took it out i bumped the knobs. I was wanting to use the scope for coyote and small game but i don't want to bump the sights just by taking it out of the case.
So, i guess when i set my zero center at 200 yards do i loosen the Allen screw and re set it to the zero mark. Is there a way to lock you turrets in place? or can you always bump them



Thanks for all the help

Wrong scope for your application. You reset to zero with the top allen screw, but they do not lock. You will always be inadvertantly moving them, especially in a scabbard. Besides 200 MPH tape, I don't know how you can prevent this from happening.