Stored SNMP Credentials SAM

Hi,

I am currently in the process of deploying SAM within our network.  We only use one single SNMP string for all of our environment.

I am finding when I do the scan of complete subnets using network Sonar discorvery, I receive the options of Public, Private and OurSNMP.  Does anyone know where these credentials are stored in SAM so I can remove both Public and Private and only have a single SNMP string available?

Thanks