My press came with a single handle. I have found that three handles work better for me. I fabricated the additional two handles from a short piece of 1” thread rod welded to about a foot of 1” pipe.
I still didn’t like the tendency of the handles to work loose in the threaded sockets of the fly wheel so I welded a bolt extension to the top which allowed me to attach a jam nut with lock washer.
I also found that adding a 2” ball to the handle bottom end made operation much easier on the hands.
These are all small things but everything that makes the day go easier I appreciate.