The PR400 supports what is known as trunking. With this system, the channel you select on the radio is known as a talk group. The frequencies used by each talk group are controlled by a central computer that tells the radio what frequency to switch to when you press the transmit button. There is no one 'frequency per channel' they bounce around.
If your employer is using their PR400 radios with a trunking service, the Baofeng will be of no use.