The Principle of Complexity is one of the basic elements of the Triad, the "pillars of the world". He assures that even the Full Conscience that generates the Universes on the Physical Plane also evolves and is part of a hierarchy.
The expansion of a Full Consciousness on the Physical Plane (i.e. the creation of a Universe) generates individual consciousnesses, which over aeons will eventually evolve into Demi-Conscience (which manifest on the Physical and Mind planes but do not generate Universes) or for new Full Conscience.
In fact, Full Conscience ceases to exist from the moment of its "subdivision", manifesting its Will through individual consciousnesses.
As each Universe is a closed and infinite system in its internal structure, the individual consciences will be protected by the primordial shell of Full Conscience until they reach an evolutionary stage that allows them to have an independent existence.
Read more in Volume 4 of the series, TRIAD.