First dial *131# Then reply 2
Then reply 1 to register
==> Then dial *131*2*5# after registering to change pin.
==> Then *131*2*2# to add beneficiary (Beneficiaries are the numbers you wish to share ur data with, and you can only add 5 , but u can change them later).
==> After adding beneficiary, then
*131*2*3# to share.