factory flow simulation app issue

Hello,

Currently I am working on a project that needs to utilize the factory simulation app. I have opened the product in the app but I could not define the flow by selecting the product. the product must utilize that table as a resource and should assemble on it. but I am getting a problem on selecting the products to create a flow can anyone help me how to overcome it and perform the assembly simulation. Thanks in advance for the help

SIMULIA ​​​​​​​​​​​​​Factory Flow Simulation ​​​​​​​Edu ​​​​​​​