I am not sure that we have ever been told. But I think it was speculated that there were only two positions in the main driveway. Either parked directly behind FGM's car, or parked on the left side of the carport (but still outside the carport), leaving room for FGM's car to get out if it was needed.
Parking on the left side would probably be the polite thing to do. imo
But who knows if FGM was driving much at the time. As she was recovering from an illness, and she was 80 years old.
View attachment 346508
Google maps