Control who can create Broadcast events
Actually without any customization, if you activate SfB Meeting Broadcast then all users of the tenant can organize a broadcast event without any control. It can induce big network problems if some users organize difference meeting at the same time.
O365 support give me a workaround using the following powershell command:
Grant-CsBroadcastMeetingPolicy -Identity SIP Address –PolicyName Tag:BroadcastMeetingPolicyDisabled
but as it is on user basis you need to schedule a script to disable on all new users.
It should be more convenient to have the ability to assign a group of even better to consider this service as an additional service/licence and have a checkbox on user licence part on O365 portal so you can assign access as you allow users to do Sway, Yammer, Planner, ... or all others services linked to E1/E3 and others licences.
As there is also PowerShell commands to manage and assign services, customer will have the full ability to manage from portal or from Powershell in a standard way.