Hi Terry,
Yin is correct that there is no setting to pass the selected element but not the set. If we wanted to build such a feature we would need to consider what happens when the hierarchy in the target book does not use a set with the selected element from the same hierarchy in the source book.
The good news is that we are already planning a major enhancement in this area of Workspace. In 2.0.99 we are introducing a signifigant improvement to the 'pass context' feature. This improvement will allow book authors to configure which synchronization groups in the source book are used to pass context to specific synchronization groups in the target book. The book author can choose which hierarchies from synchronization groups in the source book are used to pass context. In the current context passing feature all hierarchies are used. This will support use cases where navigation between books being used to drill or examine related data and generally allow for much more interactive navigation between books.
------------------------------
Stuart King
Product Manager
IBM Planning Analytics
------------------------------