You can invite people to join voice or video calls through the following steps.
■Voice and Video Call Steps (For iOS and Android)
1. Tap on the icon at the bottom right of the timeline
2. A form for posting will appear, so click on voice call
3. Tap the send button
A voice or video call will open.
You can also make call or video calls to join voice or video calls through “Open Call” in the Public Timeline