On Bebop, the native keyboard settings are for PC keyboards that have a "num lock" or Number Lock key to enable and disable the number pad. 

There isn't a dedicated "num lock" key on the Mac wired and wireless keyboards, and that also applies to many of the third party USB keyboards built for Macs as well. 

You can achieve the same function as the "num lock" by hitting the CLEAR button located on the Numeric Pad".