Simply pick the person's phone then dial *61 or *62or *21 followed by your own phone number and #. e.g *6108185200747# or *6208185200747# (put your own phone number) etc.
Once you dial any of the above codes,any call the person receives will be forwarded to your phone without stress.
TO CANCEL,pick the person's phone and dial ##002# or ##21# or ##61# or ##62#. comment