Saltrock23,
Just as sarond was stating above, you'll also maybe want to consider a "Call Fwd Cancel" button (In the form of a FAC code too) in the event that the user wants to turn call forwarding off, because in setting up the personal speed call buttons that call forward to your two different users, sadly they will not work as a toggle (i.e. On/Off) Just something to keep in mind.
Thanks,
-Iron