Only way is to call *99 and enable it. then do a torturous process of getting every caller you want accepted to call you once. Then you *99 and add them. And repeat over and over till you add them all. ridiculous.
I am having this issue too. when is this going to be resolved? this is super annoying, I want to switch providers, we have 8 lines and got a new plan, and all the call control stuff got reset and I cannot add it back anymore.
