Can people get on the plane at the airport?

No matter how many people send it. But it can only be sent to the security checkpoint because you need a boarding pass to enter the security checkpoint. Only those who leave can enter the security area with their boarding passes.

Security inspection is related to the personal safety of passengers, so passengers must be inspected without exception before boarding the plane. In other words, there is no special exemption object for security inspection. All diplomats, heads of government and ordinary tourists, regardless of gender, nationality and level, must pass the security check.