How do I add sizes to a style?

Quick answerIn 3 steps

Open the style in Catalogue → Styles & variants and press “Add sizes / colours”.
Tick the new cells marked “create”, then press Generate — each new variant gets its own barcode.
To stop selling a size, click its cell and switch it off; its history stays.

WhereCatalogue → Styles & variants in the back office

Learn it properlyAdd a style with sizes × colours (each variant gets a barcode)One style, every size and colour, each with its own barcode. Needs an owner's or store manager's login.Open the lesson →

Also asked as

“add a colour to a design”
“new size variant”