We have detailed instructions in our Design User Manual on page 6.28, entitled “Drawing a Smooth (curved) Polyline” that will assist you with drawing a Smooth Polyline. If you do not have a current copy of the Design User Manual you can download it in PDF format by opening DS|Design, going to the ‘pull-down’ menus Help > Online User Manual.
Alternatively, you can view the Tutorial Video in Part2A – Drawing tools and Part 6 Smooth (curved) Polyline. To view the Training Video PDF with the links to YouTube, log into the My Account page then go to Downloads>Design Training Videos.
Here are some other tips for using the Smooth Polyline Tool: