This can apply to all aspects of architecture engagement including Architecture Assurance, Projects, Strategy, etc.
Guidance / education needs to be accomplished at the PM level. Ensure that Architecture Assurance processes are a part of the methodology.
Establish and leverage a few important Target, Reference architectures that can be used during the engagement including architecture non-functional requirements.
During an architecture review use existing deliverables from the project to have the conversation. Additional paperwork to fill out should not be expected. Architecture deliverables need to be a part of the project so it is more of a review than an additional burden (in-process vs. out of process).
Maintain a running list of architecture key decisions that have been made. At a minimum capture the decision that are made from the architecture assurance meeting and publish it on the architecture web page.
From CEB’s Business-Driven Enterprise Architecture