To Insert RailDoubleTracksLefthand, RailDoubleTracksInternal, and RailDoubleTracksRighthand Subassemblies into an Assembly.

1. Click the "Home" tab.
2. Open "Tool Palettes" where you want to copy the subassemblies. You may open an existing tool palette or create a new one.
3. Right-click the "Tool Palettes" title bar and select "Import Subassemblies" from the context menu.
4. In the "Import Subassemblies" dialog box, click the browse button in "Source File:", and browse to the location of the RailDoubleTrackSa.pkt file and select it.
5. Clear the check box for "Link Directly to .PKT Files".
6. In the "Import To" section, select "Tool Palette", and then select the desired tool palette from the drop-down list.
7. Optionally, select the "Catalog Library/My Imported Tools" check box to add the subassemblies to the My Imported Tools catalog in the Content Browser.
8. Open "Tool Palettes" where the subassemblies have been imported.
9. In the Tool Palettes window, find and click the RailDoubleTracksLefthand, RailDoubleTracksInternal, or RailDoubleTracksRighthand subassembly.
10. Click on the assembly. The selected subassembly is inserted onto the assembly.
11. Click the inserted subassembly, right-click, and select "Subassembly Properties..." from the context menu.
12. In the Properties dialog box, change the Information, Parameters, and Codes.

For more information, refer to: Subassemblies, Installing Custom Subassemblies

Installation:

1. Download SetupRailSubassembly2.msi from Autodesk App Store.
2. Double-Click SetupRailSubassembly2.msi file to install RailDoubleTrackSa.pkt in a location you specified.

Uninstallation:

To uninstall this plug-in, click Control Panel > Programs > Programs and Features (Windows 10/11) and uninstall as you would any other application from your system.