Is it permissible for worshipers during the Friday sermon to go and switch on the loudspeaker located inside a room attached to the mosque?

It is not permissible for the listener to stand up and walk during the Imam's sermon, as this constitutes turning away from the admonition and stepping over people's necks, unless the preacher instructs someone to fix the loudspeaker due to necessity, in which case it is permissible for him to stand up and walk to fix it as much as needed.