Custom Product sorting

Hi Guys!
I need to set the products sorting as custom but can't find it....
did you make it at the end?
https://support.balbooa.com/forum/gridbox/14392-store-items-not-displayed-in-the-drag-drop-order-from-the-store-app-listing
because it is a really necessary feature for all e-commerce users...
thanks
Lukas

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