[Feature Request] Assigning multiple books to a shelf

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Is your feature request related to a problem? Please describe.
CW has the feature to assign books to shelves, which is great, given that it can run on multi-user systems.
However, assigning larger numbers of books to shelves is tiresome, as it can only be done one by one.

Describe the solution you'd like
It would be great if, in the "books lists", multiple books could be selected and assigned to a shelf via the "edit selected books" button. Specifically, the window that pop ups when clicking that button could include a list of existing shelves out of which one could select the mist appropriate one. This would save a great deal of time and should hopefully not be too difficult to implement.