WhatsApp got a dedicated button for the purpose of group conference calls. When you tap on the button you will get a slide-out menu which will display names of all group members. As of now the update is being rolled out for Android users.
This is said to be a crucial feature to the popular instant messaging app. This feature is included on the WhatsApp version 2.19.9. The feature is already updated for iOS users about a month back.
Currently, Android users had to go through a complex process for the purpose of making a group voice or video call. The new update will surely ease this task.
As of now the feature is limited to a maximum of 3 people who can be selected to make the group call. The new version of WhatsApp 2.19.9 will get the update soon in the coming days.