MSCRM 2011: Delete or deactive record by using Work flow

Hi ,

I created one system work flow
In that I have 2 conditions

Condition 1 = when Oprionset ( create Opportunity = Yes) on enity I'm creating record based upon my requirement.

Condition 2 = when Oprionset ( create Opportunity = No) I want to Delete or deactivate the record on Related Entity.

Please let me know how will I resolve this.

Thanks,