Microsoft .NET 4.7 are incompatible with Autodesk products. You may not be able to use AutoCAD or other products after the automatic update installation. Find the solution here!
Task 10: Using AutoCAD Customization
The last topic on Work Better with AutoCAD. In this topic, we review some customization options. From the simplest method: modify command alias, to programming. Feel free to add some more resources to learn customization here.