Problem with the Float Function in MRMS

Hi Mates

In MRMS i could see the cashier can do a sales transaction without entering the opening float.

Could see a problem on this

Suppose a customer purchases an item worth 2$ and tenders 5$ to the cashier and the cashier is supposed to return 3$ and the system also returns 3$.

Incase

1. In an outlet if the opening balance is only 1$ how can the system return

1. if the opening balance is 0$ then how can the cashier return 3 $ and it gets recorded in the MRMS.

Like to know why provision like this is provided in MRMS.

Thanks