Scion class/ new character

So I have unlocked the scion classes for one character and made a new one to main phantom. How do I use the class on the new character when it should be unlocked already ?

You need to complete some of the tutorial ARKS Missions and Cofy's COs and it should unlock the Phantom License CO from her, that will complete automatically when you take it.

@AndrlCh thank you I will try that.