Please ask your co-authors to log in to the submission system and fill in author information. Please make sure that you use the email address they prefer to use in CMT.   As an author or co-author, once you log in, you can see all papers under your name or account  (if you have multiple accounts/email addresses, you should check all your accounts). If an author finds any submission, for which they did not give their consent to submit, they should report to the program chair immediately.