Retail sales establishments, retail sales establishments neighborhood, retail store convenience, or retail service establishments provided that:
1. Any goods or products fabricated or processed incidental to such use shall be sold at retail on the premises.
2. Such fabricating or processing shall be confined within the building and no supplies, materials or goods used in such fabrication shall be stored outdoors.
3. No more than six persons are employed in the retail sales establishment, retail sales establishment neighborhood, retail store convenience or retail service establishment during any operating hours.