I assume they are all supposed to be watching the master at his work? If so, I hope it's the billows feeding machine scene.
They are not laughing enough for the feeding machine and Paulette's not in her costume. Had to be the scenes around his jail time.
There are other behind-the-scenes shots taken this same day on the factory set & the factory boss' office. It's hard to tell where they are filming here though.
Maybe the bathroom scene?
I think it's just a publicity shot for use in magazines and newspapers.
This dissertation for a Louisiana college credit had some marvelous insights into Chaplin vs progress. I remember the scene where Paulette and he are living in the rustic shack by a dirty stream and he gets up for work in the morning now re-employed at the factory on the horizon just yards away. The juxtaposition of opposite ideas is there. It is poetry portrayed by the lens.Emerson to Chaplin : By an essayist reviewing modernism and the transcendentalists. Well worth reading the chapters that concentrate Chaplin and his film era contemporaries.http://9nature.com/american-transcendental-vision-emerson-to-chaplin-download-w255/