Project Management - How important is the PMO at shaping

Project Management

Answer the below questions and add references used.

1. How important is the PMO at shaping the culture of the project management teams?  Should culture be left up to the project manager instead?  

2. It is well understood that Scope Creep can be a problem in a projectized organization.  We also understand that once a project is defined there are specifics that need to be carried out to ensure the project’s success.  As the head of the PMO craft a memo to the senior project managers explaining to them how to deal with scope creep and the repercussions of failing to deal with the PMO's guidelines.  In addition to using proper Memo format, make sure you consider the culture and structure of the organization in your write-up.