How do I customize my products?

There are three ways to customize products: via .CSV, Quick Edit, and Edit.
To make quick changes to individual products, go to the Products page and use Quick Edit or Edit.
To make bulk changes via CSV, create a Google Sheet/Excel with a column for EAN and any other columns you want to modify.
Upload the file in CSV format and map the columns you want to overwrite with the corresponding columns in your product database.