Technically, most webcams are plug and play, so you should simply be able to connect them to your PC to get them to work. Many, however, require their own software utilities to be installed to take advantage of specific features and to facilitate automatic updates. To actually use your webcam in a conference call, however, you'll need to use Zoom, Microsoft Teams, Google Meet, or another videoconferencing app. Make sure you enter the app's settings menu and select the webcam's camera and microphone to provide the audio and video for your call.