The size and position of the placeholders on a slide are dictated by the slide's design. Every slide you create with a particular design has the same placeholders in the same locations, and the text you type in them has the same format.
When you want additional text to appear on the slide, such as annotations or minor points that do not belong in a bulleted list, you can create a text box by using the Text Box button in the Text group on the Insert tab. You can create a text box in two ways:
You can click the Text Box button, click the slide where you want the text to appear, and then type. The text box grows to fit what you type on a single line, even expanding beyond the border of the slide if necessary.
You can ...