From practice to actual performance, he commands all especially the actors/actresses in doing their jobs perfectly.

 He is the one who writes the plot, theme, and the storyline of the stage production.

He serves a vital role in creating the atmosphere of the stage play. Sounds, music, background noise etc. serve a major role in showing slowly the pace of the production.

This role is needed if in a stage production includes dance steps.

She rehearses the actors and actresses until they can perform it gracefully.

 He  looks for the finances and sources of funds for the production.