To Refine the Calibration by Relocating Previously Specified Image Points

In the Photomatch settings window, click the Adjust button.
Select an image point to adjust by entering a data point on its handle.
The handle dynamically displays.
Enter a data point to define a new location for the image point.
(Optional) Repeat steps 2 and 3 to relocate additional image points.
Click the Match button.
Note: When entering a pair of points or relocating an image point, Resetting backs up through the entered points, removing previously entered points. This makes it easier to correct errors made while entering pairs of points.