Sorting by title then by volume

As suggested in https://www.zotero.org/support/kb/item_types_and_fields, multi-volume works in my library have the same title and are distinguished by writing the volume number and titile under the Volume field.

I'd like to sort items by title and then by volume as secondary, but the latter isn't shown as an option in the secondary sorting setting.

Is there a way to do so?
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