Can somebody answer a technical question about how to use the site for me?

Hi everyone, I'm a fairly new member here. 
Can anyone tell me how to move an expired listing from the "Watch" tab to the "Archive" tab?
I'm sure I'm overlooking something very simple but it is escaping me right now.
I know its POSSIBLE because I have ONE listing there so i managed this daunting feat (lol) at some point.

Thank you in advance and Happy Holidays everybody!