When I make a layer wire frame, then no elements in that layer will cast shadow (tested in version 22).
Do you need to see shadows at all in the elevation - you can turn them off in the elevation settings.
If the tent is an object and you are able to edit that object, I believe it can be scripted so that is does not cast shadows.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11