Step 2:
Press the “C” button and hold it at all times during the process;using the tweezers you can remove on or more of keyed & keyless tumblers.
Step 3:
Re-insert the tumblers( putting the Blue tumblers in the slots corresponding with the buttons you don’t wish to use and the Red in those you do wish to use) to produce the desired code.
Step 4:
Once the tumblers are refitted make a note of the new code and replace and secure the metal plate with the 4 screws, check the code functions before refitting to the door.
