stage manager
person in charge of a theatre stage, equipment, scenery, etc during the rehearsals and performances of a play
en-US/ˈsteɪd͡ʒ ˈmænɪd͡ʒɚ/
en-GB/ˈsteɪd͡ʒ ˈmænɪd͡ʒə/
person in charge of a theatre stage, equipment, scenery, etc during the rehearsals and performances of a play