Click on an item to get more information, or scroll down until you find what you want.
Add button: Adds a server to the server list. Server address (required) and authorization information (if required) must have been typed in the appropriate boxes to add a server.
Up button: Moves a server up in the server list. You have to select it first.
Down button: Moves a server down in the server list. You have to select it first.
Check button: Checks if a server is working properly. You have to select it first.
Delete button: Deletes a server from the server list. You have to select it first.
Username box: You can specify the username for a server here, if it requires authentication.
Password box: You can specify the password for a server here, if it requires authentication.