Hi,
Please make a descriptive title when you create a thread, this will help ( I edited it already)
there are actions on the Ecosystem browser that will let you find the position of a screen point on a plane in 3d, you can then use that to place an object.
one specifically use mouse position, the other is more generic youc an inject any screen position.
mouse3dPlaneDrag
Screento3dPlaneDrag
Bye,
Jean