Hi Shiva,

Thanks for your response.

Yes, there is no OOB functionality available for control frequency. However, we override the scheduled job running on Frequency field in profile table named "Control attestations nightly run" to r.un it based on the frequency field in the control. 

Like you've stated, "Event Driven" would be for any non regular life cycle which involves manual intervention. However, we came across a scenario where the control frequency was set as "Event Driven" but system automatically moved control to "Attest" state from "Review" state. We couldn't reason out the cause of this change. 

Would there be any other trigger for this to happen?

Regards

Balaji