Here's a seemingly simple case:
If a config has an ACL on the snmp-server community statement like this ...
snmp-server community mypublic RO 88
I want to add a statement like this to my config ....
access-list 88 permit 10.11.12.13
Interestingly enough, I am converting from What's Up Gold and the IP address I want to add is my new Solarwinds Orion server!
I think the best way to tackle this is to use the Policy Reporter. Using the Policy Reporter Application on the NCM server, you can follow the wizard to create a policy that will notify you which devices do or do not contain that line. Once that is complete you can then create a remediation script that can quickly make that change to the devices you want to have that configuration.