Adding new franchises from existing listings

Hello,

I’ve got a large database of listings that were added by us rather than users. I know that we can set up the franchises manually in the backend by export/ importing the data.

But as a user when looking at a listing and clicking on the ‘add franchise’ button there is a search field for ‘select franchise’ but it doesn’t show any results? How is it supposed to work?

In essence is there a way for a user to find existing listings and add them as a franchise?