• Select the New Call button from your call button list, or call an existing group.
• If you're starting a new call, you can invite up to 100 people (99 including yourself).
• Choose the Call option.
• Note that any group calls involving more than 25 people will be ringless. The group will be notified that the call has begun, and when they are ready, they can pick the Join Call button.
• When you start a video call button call with less than 25 participants, you can choose whether you want the call to ring everyone in the group or go ringless. Ringless calls will deliver a notification to participants without interrupting them with a ring, and you can choose to ring them if somebody needs a little extra 'nudge.'

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