The Sites page displays all the current sites that the user has access to. The panel displays all unique sites that have been entered for the organization along with the organization name and number of devices. Note that sites are tied to the organization they are associated with, so there may be multiple sites with the same name, but they are associated to different organizations.

The Name and Organization fields are both selectable items.  

Clicking on a site name will bring up the device display panel and list all devices at that location.  Any device in the list can then be selected and managed.

Selecting the Organization field will display all devices that have been defined for that organization. Any device in the list can then be selected and managed.