====== inviteGroup() ======
wrtc.inviteGroup() is used to start group calls.

To start a group call with calls a, b and c call wrtc.invitegroup([call_a, call_b, call_c])

To later on add call d to the group call call wrtc.invitegroup([call_a, call_b, call_c, call_d]). The old participants in the group call must be included into the new call.

To start a group call involving all current calls call wrtc.invitegroup() without any arguments. This method can also be used to add new calls to the group.
===== Arguments =====
wrtc.inviteGroup(list)
  * list - (optional) array of call objects to join into a group call.
To invite all current calls into a group call call wrtc.inviteGroup() without arguments.

===== Returns =====
Nothing.

===== Events =====

===== See Also =====
[[ixnx:wrtc:js:api:wrtc:addtogroupcall|wrtc.addToGroupCall()]]