You can use Configure Worksheet to modify the schema structure in the worksheet template you have already created. So, if you forgot to include a field, you can simply go back to Configure Worksheet to select the field you missed.

However, if you have already entered data in the worksheet, when you modify the template design and update the worksheet, the system prompts you to retain existing data in the worksheet. If you choose to retain the existing data, all the rows in the worksheet are marked as Processed and you must use Update QAD|Process All later to update data to the target QAD application.