The 'FlexiDesign' menu can be found next to the 'Help' menu as the following image shows.
If the 'FlexiDesign' menu is not visible, follow these instructions to enable it:
- In SolidWorks, click on 'Tools >> Add-Ins'
- In the 'Add-Ins' dialog, click on the two checkboxes near 'FlexiDesign', under 'Other Add-Ins' and click 'OK'.
- The 'FlexiDesign' menu should now be enabled for the current and future sessions of SolidWorks.