Utilities: Administration: Administrators: Site Administrator: Choose Sites
This page displays the sites that are available to you. By default, the current site is selected for this administrator.
To select specific sites, click on them under Available Sites and click on the >> button to move them to the Chosen Sites.
To deselect a site, click on it and click on the << button to move them to Available Sites. You may use the Ctrl key to select multiple sites at a time.