Google Chat is a communication software developed by Google built for teams that provides direct messages and team chat rooms, along with a group messaging function that allows Google Drive content sharing.
Remind leave reviewers when care team schedules need a decision.
Your current reviewer gets a timely reminder before a leave decision is due, with the request link close at hand.
Bring supply purchase exceptions to the policy owner's attention.
Your policy owner gets a private alert when a purchase request breaks your spend rules, so they can choose the next reviewer.