sort documents by metadata in outliner and apply in book

i added custom metadata to my documents… say a “date”
now i can sort a folder in outliner by this metadata.
but how to apply this new sorting in the binder?

the only way i found is to “create a new folder with selection” and then to move all the documents in the parent folder.
is it correct?

i reply to myself: drag from the outliner into the Binder (see )