With the Membership tool in My Workspace, you can join and unjoin available worksites.
My Current Sites: On the Membership tool page, you'll see a list of all the worksites to which you belong, including sites you have joined and sites to which you have been added as a participant by the creator of the site.
Joinable Sites: The
Joinable Sites link will
display a listing of available sites that you haven't joined. You can
Join for any of these sites.
For help documentation about the Membership tool, see Membership.