Workpiece Carrier on Conveyors

Hello, lovely people of this community.

I wanted to ask how we can define workpiece carriers for conveyors, that can be returned to the starting of the conveyor.

I have CAD files for this carrier, but I want to understand how I can tell the software that is essentially a part of the

I understand that I can make new flow groups and assemblies and define workpiece carriers and assemble the workpiece on top of it. But this method is cumbersome, especially if I have different workpieces on the same workpiece carrier in different locations in the factory.

Please suggest me an easier way.

Thanks once again.

(FYI, I am not using the Works Library)