A Money pocket is a place for you to keep your money for different purposes. That could be to keep the money for daily spendings, saving towards something special or make sure you can pay for the trip you always wanted to go on.
If you don't want to manage your money with several pockets, you can use the default Money pocket for all of your spendings with Vivid.
While there is not a fixed limit on the number of pockets a customer can have, Vivid reserves the right to restrict the number of pockets on a case by case basis.