Hello,
In the component where you want to use the assignment block you have to add it to the component usage in the run-time-repository.
Then you have it assign it to the view where you want to display it, also in the run-time-repository of your component.
Then you have to add it in the configuration to your overview page.
Maybe you want to do some context node binding in WD_USAGE_INITIALIZE of the component controller.
Best regards,
Thomas Wagner