These instructions apply to Microsoft Office Outlook 2016, 2013 and 2010
1.Click the File tab and click the Info tab in the menu.
2. Click Automatic Replies (Out of Office).
3. Select Send automatic replies.
4. Select the 'Only send during this time range' checkbox. Set the Start time, and then set the End time. In the 'Inside my Organization' tab, type the message that you want to send within your organization, and in the 'Outside my Organization' tab, type the message that you want to send outside your organization. Click OK.