Interesting! But wait a second... how does this work with prepaid cards? Do companies need to preload funds onto the cards before employees can spend them? E.g

Interesting! But wait a second... how does this work with prepaid cards? Do companies need to preload funds onto the cards before employees can spend them? E.g for an employee to spend up to $5,000 on a trip, would the company have to preload $5K onto the card? Or alternatively would employees have to get approval for each expense in advance of spending it?