Could use some version of a hunt group, but my favorite is a SECONDARY CALL KEY. When a call rings the pilot extension it will also ring that button on your phone. Cool part is you must press the button to steal the call, meaning your mind is in gear to say "Bob's desk" or whatever instead of your usual personal answer. You can also use this key like a DSS/BLF to observe status, call and transfer. Note that when you set it up there's a field for RING WHEN where you can specify whether you want it to ring each time he gets a call or only if he has 2, 3 or whatever calls.