Your total balance is a real time reflection of everything that has been charged in your Grouped.
Your available balance is what has been fully processed.
We use Stripe to securely process payments, so there is normally a 1-3 day delay between when someone is charged (it reflects in your total balance) and when the payment has been processed and you have the money (available balance).
*The amount you have available to withdraw is what has been processed by Stripe