Staff roster — open shift cover request

I need to cover an open shift at {{venue_name}}.

Shift date + time: {{shift_when}}
Role needed: {{role}}
Why: {{reason}}
Who is on the team WhatsApp / group: {{team_context}}
Is it preferable that one person already on the roster swaps? {{swap_preference}}

Write a group-chat message (max 60 words):
- Lead with the date and times — not a long preamble.
- Be honest about the reason (1 line).
- Make it clear it is first to reply who locks it in.
- Avoid making people feel guilty for not picking it up.
- End with "first yes wins, ta".

No emojis at the start. AU English.