In the Creating contact sheets help topic, I mention how to place multiple graphics into a grid. It’s a pretty neat trick, especially if you use the modifier keys to change the number of rows and columns as well as the spacing between the images.
You can also create a simple contact sheet in InDesign by placing multiple images in a grid.
1. Choose File > Place, select multiple images, and choose Open.
2. Hold down Ctrl+Shift (Windows) or Command+Shift (Mac OS) and click or drag.
3. While still dragging, release the other modifier keys and press the arrow keys to determine the number of rows and columns. Use the Up Arrow and Down Arrow keys to change the number of rows and the Left and Right arrow keys to change the number of columns. To change the spacing between frames, use the Page Up and Page Down keys or hold down Shift while pressing the arrow keys.
4. Release the mouse button to place the grid of images.
Even though the images may have different sizes, the frames in the grid are the same size. Use the Object > Fitting commands to fit the images within the frame. If images need to be moved within the frame, use the Direct Selection tool to select and move the image.