The Circular layout has general options, partition options, and options related to how
the model tree is arranged. Access the following settings by
clicking the arrow in the bottom-right corner of the Circular
Layout Options ribbon. After changing settings, click Apply to
immediately view the changes on the canvas in the background or
move on to another tab. Click OK to
return to the canvas. If you make changes and later wish to
restore default settings, click
Revert.