How to set an auto dial on a BB Pearl

I have a BB Pearl (through Verizon) and I use it for business. From 9 to 5 my calls are forwarded to my office (using *72). After 5, I forward my calls to an answering service. Is there any way that I make my Pearl automatically forward without manually dialing in the call forward instruction (just in case I forget)? For instance, may I program my Pearl to call *721234567890 at 9am, and at five pm, it automatically dials *721987654321? Please let me know if you know how.

Thanks!