Initial refinement of responsibilities and clarity in timeline.

Why is this change being made?

Addressing a need to refine responsibilities and timeline as mentioned here: !42202 (comment 296489854)

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what