You can have them all go to the Gen Del MB if you want to - but not with different ring counts.
Just set up x221 (or whatever the receptionist ext is or the ext you want) to fwd on no answer x number of rings.
Just make sure no other phone has FNA set up or have everyone else as FNA with MORE rings than x221.
Set up the Gen DEL for x221.
Make sure they do a prompt for the mail box. Then no canned Sally voice.
And all lines appear AND RING on x221


If CON is the opposite of PRO
Then what is the opposite of Progress?