The Zoning Officer shall receive, process, file copies of, forward, and schedule hearings for all applications for hearings before the Zoning Hearing Board, including applications for variances (see § 245-18, Variances), expanding a nonconforming land use (see § 245-17, Nonconformities), changing one nonconforming use to another (see § 245-17, Nonconformities), challenges to the procedural validity of this chapter that are to be heard by the Board (see § 245-20, Procedural challenges), challenges to the substantive validity of a provision of this chapter that are to be heard by the Board (see § 245-21, Substantive challenges), special exceptions (see Article III, Special Exceptions and Conditional Uses), challenges to the determination of a municipal officer (see § 245-22, Appealing determination of municipal officer), and challenges to the Zoning Officer's preliminary opinions (see § 245-24, Preliminary opinions).