I don't think there is any OOTB functionality to achieve this but we can probably use scripts to disable dropping on particular divs. Do you want the dropping feature to be disabled on multiple sections?
thanks for the response. Currently, we are allowing drag and drop of only one item at a time; which allows for the customization of the UI control: pyUDashWorkAssignmentDragHandle for the single drag and drop. If there were more details for the JS function (pega.util.DDProxy), it might help...
Since the requirement is to prevent user drag and drop assignments to workbasket and worklist, why not just remove the control from UI so user wont be able to do the drag and drop?