You can layer text and objects to create the appearance of depth on a slide and then move items higher (forward) or lower (backward) in the stack.
You can group multiple objects so that you can move, resize, or rotate them as a single unit. To avoid inadvertently moving, modifying, or deleting an object, you can lock it.
You can move overlapped objects and text higher (forward) or lower (backward) in the stack.
Select an object then overlap it with one or more other objects.
In the Arrange pane of the Format inspector, do one of the following:
Move an object one layer at a time: Click Backward, or click Forward.
Move an object to the very bottom or top of the stack: Click Back, or click Front.
Shift-click to select multiple objects.
In the Arrange pane of the Format inspector, click Group (or choose Arrange > Group from the Arrange menu at the top of your computer screen).
Tip: You can also select multiple objects, then Control-click anywhere on the slide and choose Group.
To ungroup objects, select the group, then Control-click anywhere on the slide and choose Ungroup.
After you lock an object, you can’t move, delete, or modify it in any way until you unlock it.
Select one or more objects.
In the Arrange pane of the Format inspector, click Lock (near the bottom of the pane).
To unlock an object, select it, then click Unlock in the Arrange pane of the Format inspector.