How do I remove the whole thing from the doorknob? Does it have to be rest? I cannot get it off

Kindly review the following instructions: 1.) Open Shutter 2.) Enter code (default 0000)..move lever down to open door 3.) Remove the box lock beam 4.) Direct the lock beam to the two ports above the lock body, and directly insert into the lock body. (when the lock beam is taken out, the button inside the lock body should be pushed to the right.) 5.) Close the lid. Thank you for your inquiry!