The conducting of a business or businesses at two or more locations shall, for the purposes hereof, be deemed to be separate businesses and each thereof shall be subject to the license tax herein provided for. If two or more differently classified but related businesses are carried on in the same premises by the same owners, one license issued in the name of the business to which the premises are primarily appropriated and based upon the total number of employees or other units on the whole premises shall be sufficient for all such activities; provided, any business activity lease under concession to or owned wholly or in part by a different person or persons on the same premises must be separately licensed. In determining whether different activities on the same premises are related to the primary use within the meaning of this section, normal and ordinary customs and usages of businesses of like nature shall be considered. [Ord. 698 § 8.]