Added info about non-systemd distros for pipewire (#465)

pages/Useful Utilities/Must-have.md

@@ -16,6 +16,14 @@ _Starting method:_ Automatic on Systemd, manual otherwise
 Pipewire is not necessarily required, but screensharing will not work without it.
 
 Install `pipewire` and `wireplumber` (**not** `pipewire-media-session`)
+#### Non-systemd distros
+Since here is no truly standardized way (outside of systemd) to load PipeWire when starting
+a graphical shell[^1] non-systemd distros like Gentoo or Artix provide a decicated launcher.
+
+It can be usually found by running `whereis <distro>-pipewire-launcher`.
+If such file does not exist on your install please refer to your distro's documentation for help.
+
+[^1]: https://wiki.gentoo.org/wiki/PipeWire#OpenRC
 
 ### XDG Desktop Portal
 _Starting method:_ Automatic on Systemd, manual otherwise