We have a Shortcode to Dial a Cell number.
Then we have a User setup outside the Extension lists that Forwards to that Short code.
Then we have a Group setup with the users that Forward to the ShortCodes.
Then we Twin to the Hunt Group Extension.
We also wanted to be able to have users Cells be called twice sequentially, though in order to do that we had to have 2 ShortCodes, one with 1<AC><Number> and one with just <AC><Number> and put both of these in the Huntgroup to Call.