At the main menu, press [Keypad 8] [Keypad 2] [Keypad 8] [Keypad 2] [Keypad 4] [Keypad 6] [Keypad 8] [Keypad 2] to unlock all levels.
Stopping customers from leavingIf customers are at a one heart level and your podium heart will not hold them long enough, then move the pointer over the customer and "hold" them until your podium heart is full. The customer will not be able to leave.