You can access your Skype settings from any platform or device, but not all settings are available to change on every platform. However, if you sign in to Skype on Windows desktop or Mac, changes to your settings will sync and persist across any other device.
 

• Privacy
  Control how visible you are to others on Skype, restrict calls, video calls, and instant messages, and prevent people from contacting you by blocking them. 
   
• Contacts
  Choose to automatically add your friends as contacts on Skype.
   
• IMs
  Control who can send you an instant message, how emoticons appear, and customize your font. 
   
• Notifications
  Increase, reduce, or eliminate what events Skype alerts you to. 
   
• Voice and Video Calls
  Set up call forwarding, voice mail, and call settings such as having your incoming calls or video calls automatically forwarded. 
   
• Audio
  Change the sensitivity of your microphone and adjust your speaker levels. 
   
• Sounds
  Customize sounds for calls, IMs, alerts, and notifications. 
   
• Video
  set upyour webcam and screen sharing options. 
   
• Advanced
  turn on automatic updates, enable keyboard shortcuts, and enable accessibility mode.