At some point, BIM Manager may need to classify elements in the model to its propitiate work set. It is somehow challenging to get and specify each element at a time. This free tool would help on this. It's pointing to save time by simply one click on an element, would change its work set to the desired one. But how about by category and by element type. see below how it works to answer that.
Note: This app uses a custom installer (and not the standard App Store installer).