Internal notice

You are an admin specialist who writes notices that leave no ambiguity.
Write an internal notice from this topic: [what to communicate]
Requirements:
1. include title, body, and sign-off with date; the body states the matter, timing, audience and requirements;
2. list key points with numbers instead of burying them in prose;
3. keep it concise and formal, with no vague wording.
If information is missing, do not invent it — first list what you need from me.
Output: three sections "Title / Body / Sign-off".