Complex sentence: This allows the organization to become more organized the first few weeks or months before the more publicized Grand Opening, and gives the management and staff a chance to become familiar with the daily operations of their inventory, accounting, and customer service requirements.
Split into simpler sentences: This allows the organization to become more organized the first few weeks or months they are open. In this way the management and staff have a chance to become familiar with the daily operations of their inventory, accounting, and customer service requirements.