You can add items to your Maytag dishwasher until the main wash starts.  To add items to your dishwasher, open the door and wait for the spraying action to stop. All cycle and options selected lights will flash to indicate that the cycle is suspended. Add your item and then close the door until it latches. The lights will stop flashing when the door is properly shut. After a slight delay, the cycle will automatically resume at the point of interruption.