The Shapes button is located within Insert tab (or even the Home tab) of the Ribbon.
The contrast button is located in the picture effects. It can be applied to a picture or a video.
where is the shapes button locate
The shapes that do not directly exist are very few. There are mostly all the shapes in Shapes column in insert.
shapes Gallery
office button
Office Button
On the Quick Access toolbar.
shapes
For Powerpoint 2007: Insert --> Shapes --> Callouts... pick a speech bubble. Type the text into the space provided.
Drawing
Text slide is an animation on text in PowerPoint. It can slide from top, button, left or right.
The Send to Back button.