The C3DT Flatten app has an intuitive user interface which makes it easy to use and makes working with Frame Generator a lot easier and uniform.

The user has the choice between 3 buttons. The C3DT Tab will only be visible when an assembly file is active.

When the user clicks on the Flatten Assy All button the full assembly will be exploded to a new assembly where all the parts are grounded and all the constraints are deleted. From there on the user can continue to work with the new assembly.

When the user clicks on the Flatten Assy Exclude button the user has the option to exclude certain parts or assemblies from the explosion. When the user has selected the desired parts and/or assemblies they want to exclude, a new assembly will be made where all the parts will be grounded and all the constraints will be removed. The structure of the excluded parts/assemblies will remain the same. From there on the user can continue to work with the new assembly.

When the user clicks on the Flatten Assy Frame button the program will only explode the Frame Generated Parts. All the other parts and/or assemblies will remain the same. From there on the user can continue to work with the new assembly.

For a visual explanation, you can look at the following video: https://www.youtube.com/watch?v=MY03TmDrOeM 

Install the Software. The C3DT Tab will be available inside the assembly environment inside Autodesk® Inventor®.

After the 30-day trial, you can activate the application by clicking the "Activate" button. Follow the Activation instructions.

On activation, you can use the app like in the trial version. 

After clicking the preferred button the C3DT Flatten app will create a new assembly with all the models at the top level, grounded. It will also delete all the constraints. 

The program can be uninstalled using Windows "Programs and Features" under Control Panel.

https://youtu.be/4uPi_8enwzU