If you want to stream both your screen and your webcam at the same time, that is now possible, starting with Kast version 2.9.0. Please not that you need to have Kast Premium to have access to this feature.
If you do not have Premium available, you will see the diamond icon indicating a Premium feature, as seen in the picture below.
Also, note that streaming video and webcam at the same time requires more resources from your computer than just streaming one of these. This feature currently works on high end computers and we keep optimizing it going forward. We have written a couple of FAQ articles for this: you can check out what kind of computer you need for streaming picture-in-picture and how to optimize your computer for streaming.
Now, let's get down to business!
How do I share both screen and webcam?
The process is quite simple. First, make sure you are in a party where you have kasting permissions. Then, activate either the webcam OR the screen sharing (either full screen or application window). Next, active the other one, and your webcam should show at the bottom right corner of your video.
Webcam video visible in bottom right corner. Blurred here for the anonymity.
If your computer has several cameras connected, you are able to choose which one you want to use, along with seeing a preview by clicking the arrow next to the camera icon.