What is Out of office?
Out of office is a feature in Outlook that allows you to make an automatic email to be sent to any user who has sent an email to you. This is used to alert users that if they contact a certain person that they away for a period of time. This stops users from spamming someone expecting a reply asap.
How to turn on Out of Office?
Click on File
Click on Automatic Replies (Out of Office)
From here you can edit a personal message to the users that contact you to let them that you are going to be unreachable for a period of time. You can set a time frame so if im away from 1st of jan to 3rd of jan I can set it up to automatically reply to any emails I receive.