Click on the DB King ribbon button under Add-ins tab or open the Tool Palettes under View tab in AutoCAD. Right click and select the DB King palette and insert the blocks.

These AutoCAD block libraries also come as standard .DWG file with block references in them. You can access this via Design Center Palette in the below location %AppData%\Autodesk\ApplicationPlugins\ArchBlocks Free Block Library.bundle\Contents\.

The library includes hundreds of material blocks and annotation blocks that are useful for the production of architectural construction documents. Included in the library are :

All standard dimensional lumber shapes in one dynamic block,

All AISC standard steel W-shapes in one dynamic block,

Various masonry shapes, metal stud framing, insulation materials, exterior finishes, doors and windows, and much, much more.

Using linework for building sections is a thing of the past when you can pull your material objects from this library and simply modify them to your specific needs using the dynamic block properties, cutting production time in half or even better! 

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8/8.1/10) and uninstall as you would any other application from your system.