Connectors and connector groups in GRC 10 AC

Hi All,

I am working with ARA and EAM component of GRC AC 10.0.

But, had some basic questions as to how and why we create connectors/Connector groups?

Detail Questions:

1) Why/How we can use Connector Group?

2) If we want to have specific ruleset implemented across different systems( like HR, SRM,BI) than how will we use the connectors/connectors group?

I know these might be very simple basic questions for you Gurus out there.

But, please help me out either with solutions or documents that might help me clear this concepts.

Thank you all in advance!