Should someone be here?

Does the subject want to ask "what do you mean, have you arrived?" "What or who should have happened or arrived in expectation, but it didn't actually happen or arrive." This sentence can be used in various occasions, such as attending meetings, activities, parties, or waiting for an expected event. For example, before the meeting begins, the host will call the roll to confirm attendance. If someone doesn't arrive on time, it can be said that there are "people who should arrive". In a broader sense, this expression can also be used to describe feelings of disappointment or unfulfilled expectations. For example, an individual is expecting good news or an important package, and there has been no news or the package has not arrived. This expression can be used to describe this situation.