The Studio needs a larger screen. Open it on a computer to match points and place controls.
JPG, PNG or WebP. You'll match it to satellite imagery, check the fit, add the course and publish, all on this one screen. To resume, drop your saved project file (with its scan, if it was saved by the old tool).
Send this course to the oSplit app on your Garmin watch. Help
Every action is also in the command palette (Ctrl K).