How to use OBS Studio as Virtual Camera for online Meetings

OBS Studio is well known for its video/audio mixing capabilities. One of its best applications is the usage of OBS as a Virtual camera to get control of all presentation media professionally. A virtual camera gets created in your system as a normal input camera and the presentation screen of OBS Studio (Mixed Output) get streamed like a normal camera. It can be used with all popular online conferencing systems like Zoom, Google-meet, Microsoft Teams, SIPSNITYA eLearning APP, etc.