Render multipicklist to checkboxes thru snippet

Hi,

Is it possible to render a multipicklist to a checkbox thru snippet? And is it possible to relate two multipicklists in such a way that Multipicklist B only displays the selected values of Multipicklist A? 

Note: Multipicklist A and B are in the same model and whenever Multipicklist A is updated, so is Multipicklist B.

Thanks,
Roy