Spkr (on SA or Intercom), #00, Press ANY line key, dial *14, now press the lines in the order you want them to be accessed, dial **14, Spkr to exit.
If you wait for the 2nd ring, do you see CID? There is a setting for LS CID Delay, which will delay ringing the phones until the CID is received or the 2nd ring if not.