I think my post above explains it to some degree, but I'll spell it out a little more clearly.
Player enters the game, and goes through character creation.
From here, they can start gaining levels and experience, and explore the World a bit. For instance, another character could become a 'Ranger' from the 'Rogue' base class. So at this point I start leveling. As I level, I gain points I can spend to further shape my character in terms of powers, skills, etc. Each Discipline gives you a new set of skills and powers to spend your points in, but no additional points to spend.