Manager Approval for Incident/Preventive Maintenace

We would like to have the ability to automatically assign a manager to approve incidents, similar to the approver for service requests in the Workflow tab. This is a rather odd request since generally an incident does not need to be approved. However, because some of the functionality of the software, more specific the preventive maintenance tasks, we've found this to be a necessary request.

For example, if you would like to create a preventive maintenance task you must use an incident template. Those preventive maintenance tasks aren't really incidents and may require a manger to approve them. Since we cannot use a Service Request template to assign preventive maintenance tasks we have no work around other than manually submitted these tasks for approval, something that a technician may forget between the yearly PM tasks we have.

Best Regards,

Evan