- Click File
- Click Automatic Replies
- Click Send automatic replies
- Tick Only send during this time range: - Strongly recommended
- Select:
- Start date and time
- End date and time
- Enter/edit Out of Office message
- Click Outside My Organization (On) tab
- Tick Auto-reply to people outside my organisation
- Ensure Anyone outside my organisation is selected
- Copy and paste Out of Office message from Step 7 or edit accordingly
- Click OK
Or for step by step instructions (including screenshots) on how to enable Out of Office through Outlook see the Outlook Out of Office page.