The PCO has the role of vetting the drafts. Each department is responsible for writing its own memoranda to cabinet, no different than with Treasury Board, writing Treasury Board submissions is the individual department's role
When it comes to PCO, the folks who reviewed these are looking at a number of different things. It can be as simple as formatting; it can be the translation quality; it can be the gender-based analysis. They're looking at those different pieces to make sure it's being done.