Believe it or not I have not had to setup an out of office message in a couple of years. While just clicking around on rusty memory I thought this may make for a good article for those who don’t ever take PTO, like myself.
If looking for Microsoft documentation to go even deeper:
How to setup OOO in Outlook

Click File > Automatic Replies

Click the toggle for Send automatic replies – then click the box next to Only send during this time range:
Put in your window.
Click inside My Organization and put in a message

Click Outside My Organization (On) and put a professional sounding message. It does not have to be the same message as the inside Org message.
Click ok.
Summary:
This is another quick and simple article but you never know when you need to knock off some rust. As always, I hope y’all find this useful.