Make peer review assignments early and share process in review meeting

[ShriyaRishab]

Peer review meetings need to be made before the very first review meeting and the process used to make assignments should be broadcasted to everyone in the first review meeting.
This gives folks to raise concerns if any during the meeting itself and for the assignments to be final on the day of the first review meeting.

Add an item to the calendar to ensure that peer review assignments are made.