YPAD forecast is a surface wind. Adjust it for your cruise level, or override single legs in the route.
Flight plan form
Enter altitudes in the Alt column in hundreds of feet (030 = 3000 ft). The second box is optional: the altitude at the end of the leg.
Calculation working
Waypoints
Edit a box and it saves when you leave it. Map opens the map to move a waypoint. Editing a built-in waypoint keeps your own copy (marked "yours"), and Revert brings back the built-in. Runway and frequency print in the Flight Log AD and COM columns. Tick VFR for a published point that can go in a flight plan under its own code; anything unticked is filed as the bearing and distance from Adelaide shown in "Filed as". Export writes the whole list as a JSON file; importing one replaces the list entirely, built-ins and all, so you can keep the file as your database and edit it elsewhere. Restore built-ins undoes that and puts the page's own waypoints back underneath yours. Waypoints are saved in this browser only, so export before switching device or clearing site data.
New waypoint
Leave it off for a point that isn't published — it is filed as a bearing and distance from Adelaide instead.
Tap the map to place the waypoint. Drag to pan; pinch, scroll or use +/− to zoom.