How do I announce something to everyone at once?

Q: How do I announce something to everyone at once?

Three tools: A global text message is written once and appears to everyone, on one map or on all of them. Use it for anything people may need to read again: a room change, a link, the next session. A global audio message is a recording played to everyone. Use it when you want attention rather than a note. The megaphone (aka. the podium) is live: you talk and everyone hears you, wherever they are. Use it to open the event, call people into a room or close a session. Send them from the menu, and pick a map or the whole world as the audience. Keep in mind that a global message interrupts every conversation happening at that moment. If it concerns one meeting room, walk in and say it there. If it needs to stay readable, put it on a sign at the entrance instead.

Three tools:

A global text message is written once and appears to everyone, on one map or on all of them. Use it for anything people may need to read again: a room change, a link, the next session.
A global audio message is a recording played to everyone. Use it when you want attention rather than a note.
The megaphone (aka. the podium) is live: you talk and everyone hears you, wherever they are. Use it to open the event, call people into a room or close a session.

Send them from the menu, and pick a map or the whole world as the audience.

Keep in mind that a global message interrupts every conversation happening at that moment. If it concerns one meeting room, walk in and say it there. If it needs to stay readable, put it on a sign at the entrance instead.