Pickup a call not ringing on your phone

I have 2 extensions setup as a ring group for my incoming calls to both my receptionists (say ext 100, and 101).

I am extension 102, and I don’t want to be constantly bothered by incoming calls, however, if for some reason both my receptionists are away from their desks and the phones ring, is there a way I can pickup the call from my phone? I am ext 102.

Any tips would be appreciated. Thanks.

and then you can pick a call with *8