You can start accepting payments via the Barion Smart Gateway as soon as your Barion Shop is approved.
You can find your shop’s fee package in the Shops menu, under your shop’s name. If a withdrawal delay has been set before your shop’s approval, you can find this information in a Remark under the Customer service menu.
Note that you'll need your shop's Secret Key (POSKey) to request payments in your shop, on the Shops > Actions > Details screen.
Note also that you can create multiple shops using the same Barion Wallet.