These credits may be accumulated in either a "Lifecycle" stream or a "Capability" stream; or combination thereof. Each Lifecycle module and exam is three credits. Each Capability module and corresponding exam is four credits. A candidate wanting to achieve the Expert level will have, among other requirements, to gain the required number of credits (22). That is accomplished with two from Foundations, then at least 15 from Intermediate, and finally five credits from the "Managing Across the Lifecycle" exam. Together, the total of 22 earned credits allows a person to request designation as an ITIL Expert. Advancing from the expert to the master level does not require additional credits, but does require at least five years of IT domain work experience and an extensive usage of ITIL practices