Right-click on any palette tab or blank space and select . Name it "Custom Subassemblies".

[Is Surface Target Found?] | +--------------+--------------+ | Yes | No v v [Evaluate Cut/Fill] [Use Default Slope] | +-------+-------+ | | (Cut) (Fill) | | v v [Add Ditch] [Daylight Slope] Implementing Decisions Drag a tool into your flowchart.

Title: Civil 3D Subassembly Composer — Feature Tutorial (Top-Level)

Drag Points and Links into the flowchart starting from the Origin. Modify Elements: Use expressions or targets to make the geometry dynamic. Test the logic by moving targets in the preview window. Save & Import: file and import it into your Civil 3D Tool Palette. 3. Pro Tip: Managing PKT Files in Civil 3D 2024+

The fundamental nodes defined by offsets and elevations from the attachment point.

In Civil 3D, go to the tool palette, right-click your subassembly tool icon, and select .