You can access your Skype settings from any platform or device, but not all settings are available to change on every platform.
 

• Account & Profile
  Control your profile picture visibility and view your account information. 
   
• General
  Change your language, choose your startup and close options, Cortana settings and view available Skype Keyboard Shortcuts.
   
• Appearance
  Choose your color, light or dark modes and light or dark high contrast.
   
• Audio & Video (desktop only)
  Choose your camera settings, change the sensitivity of your microphone and adjust your speaker levels. 
   
• Calling
  Set up caller ID, call forwarding, voice mail, and other call settings. 
   
• Messaging
  Turn read receipts on or off, change how emoticons appear, customize your font and other IM settings. 
   
• Notifications
  Increase, reduce, or eliminate what events Skype alerts you to and how Do Not Disturb functions. 
   
• Contacts
  Manage your blocked contacts and Privacy settings for contacts.
   
• Help & Feedback
  View your current Skype version, find links to help content, current Skype Status, and how you can provide any feedback.