goto profiles > edit profiles (top right corner)> your logins > add login

[![edit profiles > yourlogin][1]][1]


[![yourlogin> add login][2]][2]


[![add login > give email id and a new password][3]][3]


  [1]: https://i.sstatic.net/EfLVl.png
  [2]: https://i.sstatic.net/VJHzy.png
  [3]: https://i.sstatic.net/Hlp57.png