Outlook Desktop:
Open Outlook and click on the File tab.
Select Automatic Replies.
Choose Send automatic replies.
Optionally, set a time range for when you want the replies to be sent.
Enter your out-of-office message in the text box.
Click OK to save your settings.
Outlook Web App:
Open Outlook Web App and click on the gear icon (Settings) at the upper-right corner.
Select Account at the top.
Select
