How It Works:

1. Download and install the addon via Blender’s preferences panel.
2. Choose the rules you want to check and optionally auto fix in the N-Panel of your 3D Viewport by activating the Check / Fix options. You can select or deselect all at once using  All Checks / All Fixes
3. Open a Text Editor Window next to your 3D Viewport
   
4. Launch by pressing Start StemCell Check... -  your scene is getting checked for compliance with the StemCell V2 Specification.
5. The addon generates a report detailing any issues found in the text editor window. You can review the results there.
6. If the option Fix is enabled, the addon will attempt to fix certain issues automatically.
7. Fix everything manually which the addon is not able to solve automatically.
8. Run the check again until no more issues arise.
9. You’ll now have a model that complies with the StemCell V2 Specification, ready for submission to TurboSquid.