Add steps how to add emails to profile

doc/user/profile/index.md

@@ -59,6 +59,17 @@ To change your username:
 1. In the **Change username** section, enter a new username as the path.
 1. Select **Update username**.
 
+## Add emails to your user profile
+
+To add new email to your account:
+
+1. In the top-right corner, select your avatar.
+1. Select **Edit profile**.
+1. On the left sidebar, select **Emails**.
+1. In the **Email** box, enter the new email.
+1. Select **Add email address**.
+1. Verify your email address with the verification email received.
+
 ## Make your user profile page private
 
 You can make your user profile visible to only you and GitLab administrators.