Yeah, kinda... it's almost a separate kind of casting entirely. It's linked to casting type, and is meant to be used in tandem with the standard type of casting. All the secrets behind infinity casting are a large focus for the remaining books I have planned.
Meta is a kind of special case, even among infinity casters. His piece of infinity actually has some functions that can be used with the infinity power, and is also the only type of infinity caster that can work alongside people with the same power at the same time, given the time manipulation aspect.