Regarding some question on the variant topic, I offer a post to show how to handle different variants using resolved manufacturing products.

As a reminder, I will take this opportunity to explain 2 different approaches to doing robotic simulation in 3DEXPERIENCE.

• The Process-centric approach is based on the use of  the "product build-up" mechanism. This means that the Engineering product structure is used to display the product at different positions in the line. This displayed product is automatically filtered based on the selected process engineering step (all parts or fasteners are added along the line, so not all parts or fasteners need to be displayed at all stations). This mechanism makes it possible to have the product displayed always up to date with the process engineering. In this case we work with the full PPR.
• The Resource centric approach uses only the resource structure also including the product & fasteners inside what we call the "Manufacturing Product". In this case, the PPR is no longer useful because the resource structure is independent of the process engineering. 

That said, in the case of a complex line as in BIW, the typical way of working is usually to start with a process centric approach to create and adjust the process engineering (define where the parts will be loaded and by which robot the fasteners will be allocated) and if necessary (complex process to simulate, data export, ...) it is possible to move to a resource centric approach. To do this we have a dedicated feature called "synchronize data with planning" which allows you to create or update different manufacturing product from the process engineering (with the right parts and fasteners at the right position in the line).

I let you see this simple video which shows how to create the Manufacturing Product in case of multiple variants and how to use it.

Don't hesitate to respond directly to this post if I wasn't clear enough...

Thank you