A client was brought to the unit and admitted involuntarily. During visiting the next day, the client's brother demands that the client be released immediately. The brother says he might have to hurt...

A client was brought to the unit and admitted involuntarily. During visiting the next day, the client's brother demands that the client be released immediately. The brother says he might have to hurt staff if the unit door is not opened. In which order of priority from first to last should the following nursing actions be implemented?