Hi TW,
We have to do bit of conifg. First define CP as a partner function @ SPRO - SD - Basic functions - Master data - CP.
Now, go to XD02 (Any of the customer master) - General Data - Contact person tab, here give the Name,First name and function as CP. After this, go to Sales area data - Partner function and enter function as CP, system will prompt you to give number, for this number you will get the name which you have provided at contact person tab.
Let me know if i am wrong here.
Regards, Sai Krishna.