To limit the dispensed volume from the selected fueling point (in this case, Fp 3), you need to enter the desired amount. After confirming your input, the fueling point will change to a "Preauthorized" state. When you lift the nozzle by clicking on it, the fueling will begin. As the dispensed amount approaches the preset value, the flow will slow down and eventually stop once the specified amount is reached.
This is the state after reaching the limit. When you replace the nozzle by clicking on the empty slot, a transaction will be created in the POS.