Try this instruction set: Programming the BCT-8 - The RadioReference Wiki
and reference the link above to the OKWIN system for the frequencies to program in. You will ONLY need the red and blue frequencies on the database page programmed in.
You will also need to enter the "Custom Tables" on this system since it has rebanded.
Once you get the system working, you can set it up to only listen to OCPD (and block anything else).
If you need more specific help, let us know.