Note: If you are experiencing issues with the SightCall plugin on mac, make sure to check that your macOS version is up-to-date (as per our our System Requirements)
The SightCall plugin is installed via a package that is downloaded automatically when you login the first time after your account has been updated.
If you have never installed a SightCall pluign, you will be prompted to install a browser extension, followed by a prompt to download the plugin:
Once the installer is downloaded, double click on it to open and start the installation process.
You should then simply follow the installer steps to complete the process:
Once it's installed, on the first call you make, you will be prompted to authorize the use of your microphone and camera. If you didn't allow it or if you would like to allow it subsequently, you can do so in "System Preferences" -> "Security & Privacy":