Dynamic Layers > Manipulating layers |
As you work with your page layout, layers can be selected, resized, or activated. You must select a layer before you can move, resize, or align it. Resizing layers lets you change the dimensions of a single layer or make two or more layers the same height and width. Activating layers only lets you place content in them.
To prevent layers from overlapping each other as you move and resize them, use the Prevent Overlap option. See Preventing layer overlaps.