is it possible? crop a group

[jeffers 17]

several hours of frustration my brain has turned to fug so have to turn to the experts please....I am playing with a composite for the face of a greeting card.  Hopefuly you can see from the screen shot I have made a group of some layers, and I want to crop off the left hand side to fit the "half card". Whatever and however I try the whole card front crops to half size. I have tried rasterise and trim made a new pixel layer ...something simple I'm missing surely?

[Alfred 5,867]

Instead of using the Crop Tool to crop the entire canvas, use a rectangle to crop the group.

Draw a rectangle with the Rectangle Tool and adjust its size and position to cover the right-hand half of the canvas. Now go to the Layers panel, drag the rectangle layer and drop it onto the thumbnail of the group.

[jeffers 17]

That works! I would never have thought of that though I was heading that way by trying to mask the group. Couldn't find anything in the help files but perhaps I was looking too hard around the crop tool. Many thanks as always.