（1）Click Change Userinfo icon, then the following pop-up will appear:
（2）Click the button in the default avatar, then you can select a picture as your avatar.
（3）You can edit or add First Name, Last Name, Mobile Number, Email Address, Title and Bio, and Time Format, if needed.
（4）Click the Save Button.
Note: Email is used to receive captcha code when you forget your password.