Any person may file an administrative complaint with the Commission within the limitations period set forth in § 19–101(c) of this title stating facts showing or tending to show that a business entity has within the preceding 4–year period engaged in discrimination or retaliation against that person in violation of this title. Within 10 business days, the Commission shall notify the business entity against whom the complaint was filed that a complaint has been received. Before the commencement of an investigation of an administrative complaint, Commission staff shall review the complaint to determine whether: mediation would be appropriate; and both parties should be contacted to attempt such mediation in a manner consistent with the regulations adopted under this title.