Grade 2:1 slope to toposolid

[qchenTPPXV]

Greeting,

I want to create a 2:1 slope on a toposolid. I would like to know how could you approach it. I know that I could use Graded Region tool to create it. Using this method I need to adjust the top and extend the toe of the slope to the deeper topo in case the grade is create.  

Thank you for your ideas.

[ToanDN]

Modify sub elements, add points or split lines and adjust their elevation.