What do you mean by being alone in a hotel?

Notifications between departments are called placing orders.

For example, when the front desk department asks the engineering department to repair a place, it is necessary to place an engineering maintenance order, which is called "placing an order" for short.

For example, if the sales department wants to inform the restaurant when a company will hold a meeting there, it needs to send a meeting reception notice, which is also called "placing an order".