Hi Gus,
1) If I understand what you are asking for, you want do this.
Use the Edit Tool, select Col1 (or whichever level you want) and then select "Position"
Then grab the center point (see next to my X), and move it to wherever you want on the stage:
You may want to shift the center point over to the center of your image first, but it isn't required. To do that, use the same edit tool, but select "Center" instead of "Position".
NOTE: This creates a key frame in the Xsheet depending on which frame you were when you did it. In the Xsheet, you might want to 1st select the frame # of your level where your image appears on the stage for the very first time or frame 1 to be on the safe side.
2) Think of the cutting tool as a pair of scissors. When you position the tool on a line and then click the button, it snips it at that position. It won't be obvious until you select the line and move it.
Hope this helps