We have two ceiling lights that are each hooked up to two switches, either switch turns on both lights. We need instructions and a schematic showing how to run each light to separate switches. This is so we can turn on one at one switch and not the other. Thank you.

What is your experience in doing building wiring?
The only schematic is one that someone is willing to draw for you. Buildings are not wired based on instructions & schematics.

This can be done without installing additional cables, if and only if, there is a single 3-wire cable (black, white and red) in each switch box. If either box has more than a single, 3-wire cable, it can only be done by installing additional cable.

Pull both switches and tell us how many cables are in each box.