Low points block insertion

Civil 3D
2

Hola Amigo @mark.reeveTXANL buenas. everything you ask is possible with dynamo, but if you are new I suggest you start with dynamo primer, and also use Dynamo dictionary, there are many posts similar to what you ask, start by looking for them and try by yourself little by little is the best way to learn, when you get stuck post the screen shot of your script and the community will help you!