To set up your own custom CSV format for loading orders into Extensiv Integration Manager, in the CSV cart's settings, make sure the CSV File Format is set to Custom. If you already have defined some formats, you can select them, otherwise, click the Manage CSV Formats button at the bottom of the page. You don't need to fill out any of the other CSV settings fields to do this.

1. Select the file type you will be mapping (Order, Confirmation, or Inventory).
    
2. Click New Order File. You can come back here later and edit an existing format if needed. There will be another button displayed for editing.
    
3. If you have a sample file, choose it on the left and click Upload. If not, click Manually Set Up CSV Format on the right.

4. You must next define the delimiters in the file (eg: comma), if the file will have a header row, and whether orders with multiple products will be duplicated vertically, or the products added at the end of the line Horizontally. Double-check these and make sure they are correct. An error here will cause your orders to be loaded incorrectly or could cause some records to be missed.

5. Next, for each column in the CSV file, you must select what type of data is there. Choose from the dropdown.

If your CSV file is Horizontal, you must click the Red dot() at the end of the product information for the first product. For example, if there is a product code, quantity, and price, click the red dot corresponding to the first product's price. Integration Manager will then know to expect additional products after that in the same order.

Additionally, at the bottom of the page, you can set Constant Values. These lets you pass a value to Integration Manager which is not actually in the CSV file. Just select the Integration Manager field and enter what data should be put in it.