You can import existing customer and article indexes to Billogram. To upload your index use se XLS, XLSX, or CSV formats. It is important that each column in the table contains only one type of information. For example, name, adress, zip code and mail address for the customer is divided into separate columns in the file you import. When the file has been uploaded, you can chose which rows in the table are included, and what they represent in Billogram.