controls the slide layout of the placeholders.

a
Slide layout
b
Slide transition
c
Slide Animation
d
Theme

a. Slide layout

The controls for slide layout of placeholders can be found in the Slide Layout option. To access this:

1. Open your PowerPoint presentation and go to the slide you want to modify.
2. Click on the "Home" tab at the top of the screen.
3. In the "Slides" group, click on the "Layout" button. This will open a drop-down menu with various slide layout options.
4. Choose the desired layout from the available options. The placeholders for title, text, images, etc., will be arranged accordingly.

By selecting a specific layout, you can control the arrangement and design of the placeholders on the slide, such as where the title and content placeholders are positioned, whether there are additional placeholders for images or charts, and so on.