The video chat function is a bit hidden. To use it, you first have to create a new event or open an event that has already been registered. Now click on the "Start/Join video chat" button at the bottom of the event page. The video chat opens directly on the page. First you have to enter your name and confirm that you want to share your camera and microphone. Now you can see and hear the other members who have joined the same meeting. You can also invite external people by copying and forwarding the conference link (user icon bottom right).
However, if there are too many users, the program can reach its limits. If everyone has their microphone and camera on, the load limit can be reached even with a single-digit number of participants. It is therefore best to turn off your video if you have larger meetings. Tip: You can use the three-dot menu and "Quality Settings" to set the quality to "Low resolution" to reduce the load. The "fairmeeting" service, which is based on the open source software "Jitsi", is used for the video chats. Accordingly, you can also share your screens and chat parallel to the meeting. Your meetings are tap-proof and compliant with data protection regulations.