Selecting this menu function in the 'Aerial Triangulation' menu will display the following 'Control Points' dialog:
Adding new control points:
Fill in the different fields: Point Name, X, Y and Z.
Select the type of control point: XYZ, XY or Z.
Press the 'Add' button to add the point to the list.
Modify a control point:
Select a point from the list to make the fields editable.
Change the necessary field.
Press the 'Modify' button to change the GCP in the list.
Remove a control point:
Select a point from the list.
press the 'Remove' button to remove the point from the list.
CLOSE:
Press the 'Close' button to stop editing the control points.
Remark
When you have all the GCP's somewhere available, you can also introduce the GCP's by copying them into the '{Projectname}.scp' file using a text editor, before opening the project.