The host and the nearby user are located nearby (requires location settings of both users, nearby is a defined radius).
Main success scenario:
The host announces an event (e.g. a "virtual welcome party" because planning of the map was finished)
Alternative scenario:
Error scenario:
The host does not have a location set: An error message is displayed,
which informs them that the location is required for sending invitations.
Postcondition:
Nearby user gets a notification which informs them about the event (e.g. invitation to visit the map virtually).
The user without location gets a notification which informs them about the event (e.g. invitation to visit the map virtually)
with the additional text that they get the invitation because they don't have a location set.