2. tighten two screws on mortise to the door
3. install cylinder
4. connect the cable on the mortise to the front lock panel, install the front panel to the outside of hotel door
5. connect the cable on the mortise to the back lock panel, insert spindle to the handle hole on back panel, then insert through mortise spindle hole to front panel
6. tighten the screws on back panel
7. install strike box and strike panel to the door frame