Here you find instructions for creating an email signature in Outlook for MacOS.
1) Open Outlook and click "Outlook" in the top left corner. Select "Preferences":
2) Click "Signatures":
3) Click the plus sign in the left corner to create a new signature. Double-click the name to change it and give the signature a descriptive title. Next, type your signature into the "Signature" window. Select the applicable account under "Account". Select the title of the signature you just created for "New messages" and "Replies/forwards". As you can see, it is possible to have different signatures for regular (new) messages and for replies and forwards
Employees make sure you follow the standards stipulated by UI. Signature standards for UI staff can be found at the link. All you need to do is copy the standard and change your name, title, and so forth: UI design standard - signatures:
4) Close the window.