Department employees shall not be excluded from assignment at a unit solely because a relative, including a spouse or an ex-relative by marriage, is assigned to that unit, except as follows:
When such assignment would involve a supervisory/subordinate relationship within the unit; and/or
When the commander of the unit in question decides that other factors may dictate the prohibition of assignment of relatives at the same unit for reasons such as, but not limited to, size of the unit, scheduling conflicts, etc.