In order for an event to appear on an event campaign map, hosts must click the host button on the main map page and create the event from there. Creating an event in any other way will result in an event that's not connected to the event campaign, and therefore not on the map.
If an event has already been created, the host will have to go back to the map page and create a new one with the host button in order for it to appear on the map.
Note that if you did correctly create your event by clicking the host button, and your event is sponsored by the larger organization hosting the event campaign, depending on the event campaign there may be a short delay in populating the map.
For our step-by-step guide for local event hosts for event campaigns, click here.