There are two stages to updating your profile.
The first stage is updating your personal contact details: address, email, university, and so forth. This is is done by clicking the “Edit Profile” link on the right side of the page. If you don’t want a particular detail showing, you should remove it from your profile. Your email address can be hidden, but cannot be removed from your profile.
The second stage is updating your biographical details: your work history, your publication, your fields of interest. This is done by clicking the “Edit Extended Profile” on the right side of the page. Select your fields of expertise by clicking on them from the lists provided. If you’d like to see additional types of expertise added, contact a site administrator. If you’d like to select more than one type of expertise, hold down the SHIFT or CONTROL key, or on the Mac, use the COMMAND (Apple) key while you click.
Be sure to save after making your edits. Your profile will update immediately.