Open your Outlook Web App, click on the gear icon at the top-right corner of the page and click on “Options”
On the side bar menu on the left, click on “Organize email” and then click on the “plus” sign under “Inbox Rules”
Click on “More Options”
Under “Apply this rule”. Select the condition that determines when you want the rule to be applied, and then under “Do the following”, open the drop-down menu and select “Move, copy or delete” and “Move the message to folder…”. Click on “Save” when done.