After you install and configure Server and enable the Gallery, you can open a browser and go to the Gallery URL set in System Settings in Gallery > General > Base Address. The Gallery is the web interface where users interact with Server. A Gallery Admin user has access to the Gallery Admin interface to manage an organization's private Gallery.
These articles cover the options available to Curators (Gallery admins) on the various pages in the Gallery Admin interface. To learn more about options for users in the Gallery interface, see Use Gallery.