Sentence:  For this scene, a large number of supers are engaged, and in order to further swell the crowd, practically all the available stage <WSD>hands</WSD> have to ‘walk on' dressed in various coloured dominoes, and all wearing masks. 
Meaning of the word marked with <WSD> tags:  An agent; a servant, or manual laborer, especially in compounds; a workman, trained or competent for special service or duty; a performer more or less skillful.