GDel

Could you please provide details on the first two methods mentioned? Specifically for East-West slope. I have tried placing trackers by hand with varying object Z positions, but the software gives me an error with backtracking (see image). I have also tried filling a zone with trackers, but can only do this with trackers tilted North-South, which isn't exactly the same as a North-South ground slope. I did see a "Baseline Slope" field but it is greyed out and not editable. Thanks!