If multiple managers are viewing the order page simultaneously, then each manager will be notified at the bottom of the screen that another manager is also currently viewing the same order.
If, while editing an order, another manager makes and saves changes, the first manager will see a corresponding message and will receive a choice - to apply or not apply their changes. In the first case, priority will be given to the first manager, and the changes of the second manager will be canceled. The order editing history will display the fields that were changed and the name of the manager who made the changes.