Change location of Deleted Items and Junk Email folders in an IMAP connection

First off, I'm running 14.3.6. I go to Tools->Accounts and choose my account and then I try to change the location of the Deleted Items and Junk email folders but it won't let me choose a location other than the server in the drop-down menu. How can I choose a different location (such as local computer) or even better, eliminate these two folders all together? I'm getting constant error 1025 messages because my IMAP connection is read-only and Outlook keeps trying to create these folders on the server.