To edit each vector, double-click on the vector to edit in the vector column in the scan dialog box (Insert | Scan).
This displays the Edit Scan Item dialog box:
Edit Scan Item dialog box
Use the different fields to edit the I, J, and K values.
Click the OK button in the Edit Scan Item dialog box to apply any changes that you made.
Click the Cancel button to close the Edit Scan Item dialog box without applying any changes.
Click the Next button to cycle through the available vectors in the Initial Vectors list. Some of the initial vectors can be flipped. If so, the Flip button becomes available in the Edit Scan Item dialog box.
Click the Flip button to reverse the direction of the selected vector.