The teenage years can be a tough time, whether you are parenting a child or trying to mature a PMO. In both cases, we find insecure and anxious creatures navigating their way through life, trying to make sense of the world and to assert their independence. Maturity is a journey and PMOs should not try to run before they know how to crawl. However, while there are some well-known organisational project management maturity models, such as CMMi® or P3M3®, there is no model specific to assist PMOs in progressing their maturity. With a thought-provoking approach, this workshop will introduce you to the brand new Wellingtone PMO Maturity Assessment Model, demystify conventional assumptions relating to PMO maturity, and provide you with tips and hints for transitioning your PMO from the moody level 2 to the uncharted land of level 3 and 4, where mature PMOs live.