By position, you mean "Location" ?
Also, why trusses don't have the "Location" parameter in their geometry proprieties ? Rigging points have it, but not trusses.
If i want to do a Fixture Location Report that include the weights of the trusses, i have to add an "Unit" to the trusses that match the "Location" of the fixtures. That don't make sense to me.
What is the difference between "Location" and "Unit" ?