To set up a voice conference call:
• Make a voice call to the first party as usual
• While on that call, click on 'Add Call' to call the second party
Note: When the second call is being established, the first call will be automatically put on hold. You can swap between the two calls.
• Tap Merge to join the two calls and form a 3-party conference call
• Repeat the above step to add 7 more participants and make it 8-party conference call.