Delete Permit Assignment

Hi experts,

My client wants to use permits in Maintenance orders. There are few points given under

• Permit should not be assigned through classification.
• Permits can be assigned by any person ( group).
• But permit can not be deleted by all persons or even person who have assigned the same.
• Only certain group or persons can delete the permit assignment.

* we are not using classification and nor even object based permit assignment. Permits should be assigned manually only.

Regards,

Raj