@Red Velasco-Oracle Thank you for the guidance. Here are the parameters that allowed the workflow to initiate correctly without errors!

@Red Velasco-Oracle Update. I scheduled the workflow for an hour, then created an Opportunity and waited for the WF to execute. Unfortunately, the workflow still did not recognize the Opportunity ID. I received an email with the same error that has been received when attempting to create tasks upon saving of a new…

Thank you @Red Velasco-Oracle A few follow up questions: Is there a way to add "Minutes" or "Seconds" to the delay options? Would "Event Types" be needed as "Create" Event Types is not an editable field