How can I change my own/my coworker's email/password?
You cannot change other users' email addresses or passwords. Each user can only change his/her own email.
To change your email address and/or password:
click on your email address in the top right corner
click on the blue "Edit Account" button
to only change your email address fill in the new address, leave the password fields blank and press "Update"
to change your password fill in the new password in the "Password" and "Confirm Password" fields and press "Update"
If you forgot your passwords you can set up a new one by using the 'forgot password' link in the top right corner. This will send you an email with a link to reset your password. If your email does not work please contact support.