The first step of the assistant is the data selection. The goal of this step is simply to enter the position of the data into the worksheet.
If before the start of the assistant a range is already selected, it is automatically used. If the selected range isn't the right one, you have to click on the selection and select a new range.
If the selected range contains the subject labels in the first column, the item labels in the first row or the correction key in the next row, then check the appropriate box.