Is the Primary Contact considered to be the person who actually signs the grant applications?

Usually, the Primary Contact is the person with signature authority - The Project Administrator listed on the Statement of Grant Award (SOGA) has signatory authority on the grant.  For the CCCA/PSA grants, the primary contact is the person with the day-to-day responsibility for the grant, usually the Agency director. However, your City Manager or County Administrator must register in OGMS. If they are not registered, your application will not accepted.