Expanding RelayOutput Example of Arduino

Hey guys,
I need to expand the RelayOutput example with additional 10 new setpoints but the same input.
point is that every 2 hrs a new setpoint must be used.
any suggestions?

I assume that this is a question about an example from the PID library

You can change the value of the Setpoint variable at intervals using timing techniques described in Using millis() for timing. A beginners guide and Several things at the same time