You can, but the trick is to create the icon before you apply it to the first image.
So you have your RGB image open, you start the Dyn Crop process, select a window to crop to in the RGB image's window but don't apply it. Now drag the blue triangle of the Dyn Crop process onto the desktop to create a process icon of it. Now you can apply to the RGB crop if you like. Or you can cancel that Dyn Crop process and drag the desktop process icon onto it. Either way.