Hi Bill,
I believe the following free class has information about submitting information regarding missing signatures:
https://marketplace.ca.com/education/14clm20020.html
You will have to add the class to your cart and go through the check-out process, but the price is $0.00. It is a worthwhile class and is not very long.
As for which signatures should be on your DM, since you have many DMs and an EM I think it’s fairly safe to say if all your managers are downloading signatures and none of them have the signatures you are looking for then they are not available. If a signature is just missing from one or two managers then perhaps you have some problem. It is quite uncommon for a manager’s CIC to appear to be working but have missing signatures. If you think your signatures are incomplete, contact support and ask how to reset your CA-provided signature database to baseline, after which it will re-download all available signatures (warning – takes several hours!)
Steve McCormick, ITIL
CA Technologies
Principal Services Consultant