You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
Stairs
These tools enable you to create four types of staircases: straight, spiral, multi-landing, and U-shaped.
 Available in TurboCAD Pro only. Spiral, Multi-Landing, and U-Shaped stairs are Available in TurboCAD Platinum only.