Masjid screen
The projector or television in the masjid.
Hall screens
Open this page on the laptop that drives a screen, then choose what this laptop is. No PIN needed — a screen only reads.
Checking…
Livestream (OBS)
The OBS laptop. Same picture as the masjid screen.
Sound: the Durood should come from one laptop only. Usually that is the masjid laptop, which feeds the PA; OBS then hears it through the mixer.
Switch OBS on only if OBS has no feed from the mixer.
To come out of a screen: press Escape twice, quickly.
In OBS itself: add a Browser Source at , 1920 × 1080, tick “Control audio via OBS”.