By default, TurboCollage tries to position a picture within its frame such that faces in the picture are not cut off. If there are no faces in the picture it is scaled uniformly (maintaining the image's aspect ratio) so that both of its dimensions (width and height) will be equal to or larger than the corresponding dimension of the frame. You would often like to pan or zoom the picture within its frame so that you don't have to crop picture using some other software and then use it in TurboCollage.
Select the picture you would like to pan or zoom in its frame by clicking it in the collage.
Two holders for pan and zoom will appear besides the selected picture.
Drag the pan holder to move the picture within its frame.
Drag the zoom holder away or towards the center of the frame to zoom the picture within its frame.
Note that you might have to alternately pan and zoom multiple times to get the desired positioning.
You would only be able select a picture if the pictures are unlocked at the top of the application.