I wont to retain all messages on my PC but delete those older than say 60 days on server.

The options for emails on the Inbox indicate that I can only delete both (PC copy and server copy), but I wont retain all messages....is there a way around this eg do I transfer all messages I want to keep out of my inbox to another folder or folders, then allow deletion of emails from my inbox which will also delete the server copy? If this is correct, where do I set up the folder to retain the emails and, can the movement or copying of emails to this folder be made automatic....if so how? Appreciate your advice.