General. A home occupation in any district shall be an accessory use of a service character customarily conducted within a dwelling by the residents thereof except that one nonresident assistant may be employed, which is clearly secondary to the use of the dwelling for living purposes and does not change the character thereof or have any exterior evidence of such secondary use and, in connection therewith, there is not involved the keeping of stock-in-trade. Notwithstanding, home occupation regulations that follow for each district, all home occupations shall provide off-street parking for a minimum of four vehicles. Further, the office of a physician, surgeon, dentist or other professional person, including real estate and insurance, violin, piano or other individual musical instrument, limited to a single pupil at a time, who offers skilled services to clients and is not professionally engaged in the purchase or sale of economic goods, beauty parlors, and barber shops, shall be deemed to be home occupations; and the occupations of dressmaker, milliner, or seamstress, shall also be deemed to be home occupations. Dancing instruction and band instrument instruction in groups, tearooms, tourist homes, convalescent homes, mortuary establishments, and stores, trades, or business of any kind not herein excepted shall not be deemed to be home occupations. Yard or garage sales are permitted in all districts without regulation four times each year. Yard sales shall be held as Friday, Saturday and/or Sunday events, but may extend longer in conjunction with a holiday. Yard sale beyond the four per year limit shall be considered a home occupation and must meet all the requirements of this Chapter.