RAM Elements - pin shells together

I have CMU walls on top of Concrete basement walls.  Is there a way to change the fixity of the CMU wall to the Concrete below?  Supports are pinned below the Concrete wall.  I'm using shells and the integrated modules to do the wall designs - so changing the fixity within the module is not an option.  I want the CMU pinned to the Concrete below (not fixed).

Thanks.