How do i do archive on INotes WebAccess

Hi Can anyone shed some light on how can i archive my mail database in Domino Web Access. I need to archive the mail documents to my local machine.

I noticed that there is a “Archive” button on the top right corner when i logged in to Domino web Access, but i get some Domino Web Access Error message when i click on the button.

Where is this piece of button code being stored? I had tried to look thru all different design elements on the mail database, but cant find it.

Any help will be greatly appreciated.