Positioning of silverware Is critical.
Being a member of the royal family, you must follow a set of rules even if you choose to excuse yourself from the Dinner. As a part of Royal etiquettes, these rules include gestures relating to the silverware, which indicates some messages by crossing the utensils on the table. The other royal staff members would know that you will return to the table and that your plate should not be removed.
In contrast, if you have finished your meal and want to leave the table, you need to place your silver wear at a particular angle with the handles of the utensils at the bottom right of the plate. This indicates that you are done with the dinner, and the plate should be removed. Being a Royal is too much of a responsibility, and even simple tasks like attending the dinner table are full of rules and regulations.