I know, it's been mentioned in other threads; but folks new to CZ's might not be aware how to safely put a CZ with manual safety into DA/SA mode which requires manually lowering the hammer over a live load. I don't believe there's anything in the manual that covers this in detail.
I prefer the 'thumb' method which places the weak hand thumb between the cocked hammer and firing pin, preventing the hammer from dropping. With the gun pointed in a safe direction and safety now off, I pull, then release, the trigger allowing the hammer to move forward ever so slightly against my thumb. This engages the 1/2 cock stop. Now, with my finger off the trigger I gently 'roll' my thumb to allow the hammer to move forward softly against the 1/2 cock stop. Obviously, it takes a lot of dry practice before feeling confident enough doing this over a live load. Only then, I practiced this at the range with gun pointed downrange until I could (almost) do it with my eyes closed.
There are other methods of doing this, but I prefer having my thumb between the hammer and firing pin when I pull the trigger. Once the hammer moves forward even a fraction of an inch against my thumb and my finger released away from the trigger, the firing pin block is automatically engaged.
My first CZ was a manual safety SP-01. (I've since traded it toward an SP-01 Tactical decocker). Loved shooting the gun in SA mode, but once I discovered how to engage the DA mode safely, and practiced with the DA 1st shot; I feel I'm now getting the real benefit my CZ has as a defensive gun with the DA/SA 1st round double action, no safety manipulation required. That's just my choice, and I respect other's. Just thought it important to cover a safe method of manual decocking in this thread.