Set Outlook's AutoArchive for Individual Folders
Click the OK button.
Even though you’re only setting the AutoArchive settings for a single folder, you must turn on Outlook’s AutoArchive setting. If AutoArchive is already turned on, the Inbox Properties dialog box will close and you’re all set.
If, after you click OK, a window pops up stating There Are No Global Autoarchive Options Set, this means that Outlook’s AutoArchive setting isn’t on. Luckily, this window gives you the option of turning it on just by clicking the OK button. Click OK to turn on autoarchiving for Outlook and for the Inbox.