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.
Drag an object so that it overlaps with one or more other objects.
Tap
, tap Arrange, then drag the Move to Back/Front slider.
Touch and hold an object, then with another finger, tap the other objects you want to select.
Lift your fingers, then tap Group.

To ungroup objects, tap the group, then tap 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, then tap
.
Tap Arrange, then tap Lock.
To unlock an object, tap it, then tap Unlock.