Drag a highlighted part to move it.
Right-drag, or twist two fingers, to orbit freely.
Small models for items dropped on the ground. Pick a part on the right to recolour it; drag its gizmo to move it.
Which model represents each item when it's dropped. An unbound item shows only the generic pile.
Select a part below to edit it.
Select an agent to edit it.
Open a preset to edit it — leaf presets tune with sliders, grass blades are shaped in the 3D view.
Open a type to edit its color, ground texture, movement, transitions, and scattered foliage and models.
Open a material to edit its color, roughness, side, vertex-paint and wind flags, and texture.
Hierarchy
While active, click a side face on the block in the 3D view to toggle whether it obstructs movement. A blocked face shows as a translucent white plane.