In order to enable (selected) Lumix cameras to be used for live streaming, Panasonic is providing the free tool "LUMIX Tether for Streaming", but for the time being only for PCs and in beta. It is based on the Lumix Tether software, which allows cameras to be remotely controlled from a computer via USB, but as a special feature it offers a clean Live View view without an interface.
According to Panasonic, this view can then be accessed by a separate streaming or web conferencing software. Initial user reports from the Internet indicate that this works well in some cases, but that sometimes the camera is only recognized via the Streamlabs OBS program. Unfortunately, we were not able to try out the setup itself, as the camera&s serial number must be entered to download the software and we only have a sample model at hand.
As with the "normal" Lumix Tether software, only newer Lumix camera models are supported, namely the GH5, G9, GH5S, S1, S1R and S1H.
In the meantime, several major camera manufacturers have reacted to the current situation, in which a great many people depend on video-based communication, and have expanded their cameras with a webcam functionality that is in great demand, see here for Canon EOS Tool or here for Fujifilm X Webcam.