As reported by Softonic, a screenshot of this feature has been leaked to the internet thanks to WABetaInfo. It shows the voice call feature on it, but the video call feature for WhatsApp Web is still in the alpha development stage.
WhatsApp Web Menu Screenshot Leaked
We can activate the call feature easily. By clicking on the settings menu icon on the top right of the chat screen, we will have a neat and satisfying talking time with our families, friends, or colleagues.
It has a little difference if we want to make a video call, but it’s not that difficult at all. We simply just open the chat contact you want to call, click the icon in the upper right, then press the voice call. This feature is far from a general launch, but at least users can already see it as shown through screenshots.
The call feature is still in the early stages of development. But it hasn’t been announced about when this feature will be available on WhatsApp Web.
For your information, this web services are no different from WhatsApp for mobile phones, but through WhatsApp Web users can more easily send and receive messages via a computer.