The Site Settings tab gives an authorised user the ability to edit the following: 

• Enterprise Name: This appears in relevant parts of the Amplify software. 
• User Locale: Determines the format for dates, times, and currency used by Amplify
• Allowed Document Formats: The file extension types that can be uploaded to Amplify using the Upload documents functionality.
• Amplify Help URL: The URL used to access Amplify Knowledge Base. 
• Session Timeout(in minutes): The number of minutes before a user session times out.
• Session Timeout Warning Threshold(in seconds): The number of seconds before session timeout, a warning will be displayed on the user interface. This is triggered by inactivity. 
  
  

It must be noted that the following setting will cause a server restart!

• Enterprise Name
• User Locale
• Session Timeout(in minutes)