Super Step & Repeat:
Alt-Shift/Option-Shift drag an object to make a copy. But before you release the mouse, press either right arrow or up arrow to make additional copies between the existing objects.
To fit a frame to a graphic: Double-click a corner of the frame (or Cmd-Opt-C / Ctrl-Alt-C.) This also works with text frames.
Resizing Content in a Frame:
The set of shortcuts for fitting an image to a frame is also useful, and with it you can easily adapt content the way you want. To keep the frame the same size and fit the content proportionally, press Command + Option + Shift + E. (Note that if the image and frame have different proportions, then some white space will be left.)
To fill the frame proportionally, use Command + Option + Shift + C. (If the image and frame have different proportions, then the image will be resized and end up larger than the frame, being cropped the edges.)
To center the content in the frame, use Command + Shift + E. And if you want the image to stay the same and resize the frame instead, then fit the frame to the content with Command + Option + C.
Selecting the top frame is easy, but if a lot of frames are overlapping or one is on top of the other, you can cycle through them by holding Command on Mac and Control on Windows and then clicking on the frames to select the lower one. Keep clicking to cycle through them if you have several frames.
Select multiple objects (frames or lines) that are in a row and then click a side handle of one of the outermost objects. Hold down the spacebar and drag the handle to increase/decrease space between objects vertically or horizontally. Or, drag a corner handle to distribute the space between objects diagonally.
To create a grid of objects, start drawing a new object and before you release the mouse, press the right arrow or up arrow to add rows and columns of objects. To increase/decrease space between them, press Cmd (Mac) or Ctrl (PC) right or up arrow while drawing. To finish, release the mouse.
Live Corner Effects:
Click the yellow square on the right side of any frame to activate Live Corners. Drag a yellow diamondto increase/decrease the corner effect. Opt/Alt-click the yellow diamond to cycle through the other corner styles. Opt/Alt-Shift-click to change just one corner.
Placing multiple images:?Choose File>Place. Select one or more images to place.
Your cursor will show a thumbnail of the first image. Click on the page to place one image at a time.??Options:?-When the cursor is loaded with multiple images, press the left or right arrow key to cycle through the images. ?-Press Esc to delete an image without placing it.?-To place all the graphics in a grid of frames, Cmd+Shift-click (Mac) or Ctrl+Shift-click (PC) and drag to create the grid.?-To add rows or columns to the grid, press the right or up arrow key before you release the mouse.
Replacing one image with another:
Choose File> Place to select an image. Then Option (Mac) or Alt (PC) click on an existing image on the layout you’d like to replace with the new one.