The Shape Generator Settings allow you to set a target mass reduction and the mesh resolution.
To access, click
Shape Generator Settings on the Analysis tab.
Shape Generator suggests how to maximize the stiffness of the part using a given amount of material. Future versions may offer additional design objectives and constraints.
Mass Target
In the Shape Generator Settings dialog, you can see the original mass of the part. Specify a percent reduction of the original mass to drive the Shape Generator. The new mass target will update automatically as you adjust the percent reduction.
Mesh Resolution
Use the slider to control the mesh resolution of the generated part. A more refined mesh helps produce a smoother, higher quality solution, but will result in increased run times.