1. Click the Integral button on the Operation toolbar.
1. Make sure not to click Manual mode inside the Integral operational toolbar. Select any integral curve by clicking on it.
2. Zoom in to any peak for which the integral has been calculated. Place the mouse pointer over the top or bottom side of the rectangular selector of the integral curve so that the arrows appear instead of the cursor and drag it vertically. Note that all of the other integrals are resized with the selected one. The blown-up portion of the peak around 3.8 ppm will look approximately like the following:
Tip To deselect the integral curve(s) click outside the rectangular selection.
3. Place the mouse pointer at the center of the rectangular selection of the integral curve and drag it vertically. Note that you can only move the selected integral curve. You can move every integral curve in a similar manner:
4. Place the mouse pointer over the left/right side of the rectangular selection that surrounds the integral curve so that the arrows appear instead of the cursor and drag it horizontally to expand or narrow the integration area: