Male' hub (VRMM): The Trans Maldivian Airways terminal is at Velana International Airport. Use ICAO code VRMM and OpenSky will automatically match departures and arrivals here.
Resort islands: Most private seaplane docks do not have ICAO codes — OpenSky will report their departure/arrival as null. Add the resort without an ICAO code, then use the edit button on individual route legs to manually assign them.
Finding coordinates: Google Maps → right-click the seaplane dock → copy the decimal coordinates. Or use the resort's website. The coordinates are stored for documentation and future proximity-matching features.
If you haven't already, add the Male' seaplane terminal first so OpenSky routes to/from VRMM are automatically matched.