Connecting a Leviton light timer w/ 3 way set up
Follow the instructions that came with the timer. Otherwise, look them up online. And make sure your timer and switch can handle LED lighting. This could be a critical point to consider, or not. Also, Which of these two switches takes power from the source, and which of these two switches gives power to the light(s)? Three-way switches typically have three terminals as well as a bond wire or a bond screw for Ground (4 altogether). Not sure why the Leviton would have 5 wires. Check the included specs sheet for clues.