How would one sync a book to a different computer with authorized adobe digital editions installed?

Made a quick search, but I couldn't find a guide or someone who could explain how to go about the process. Just to make things a bit more clear. What i'm asking is that if I have two computer (laptop and desktop) and I install Adobe Digital editions on both and purchase from one, how can I get the books I purchased synced on both? I understand you have to authorize the computer when installing software and that is done. I just can't find where I could sync books. Also, sync option is enabled on both computers.

Thank you,