How to set an Out Of Office (OOO) from Outlook Mobile
- Launch the Outlook app on your phone.
 - Click the Home button on the Top-Left corner
 - Click the Settings icon.
 - 
Select your Outlook account
 - Tap the Automatic Replies button
 - Press the Automatic Replies toggle to enable “out of office” replies.
 - Type the “out of office” response in the text box under the “Automatic Replies” toggle.