One of the benefits of the Outline tab is that it provides a fast way for you to enter text without having to deal with placeholders or graphics. Adding text here consists of entering the text, which appears at the same outline level as the line before. You can then demote text to become a subheading (subtitle or bullet points) or promote a bullet point to become the next slide title.
The first slide is always created using the Title Slide layout. There is typically only one title slide in a presentation, although you could duplicate it and place the duplicate at the end of your presentation. A Title Slide consists of a Title and Subtitle. After the first slide, all other slides you create use the Title and Content layout by default.
You can create many levels of indented bullets in an outline, but a couple of levels is usually the most you should ever have. As a rule, if you have that much detail to provide about a point, it really should be a separate slide. Also, in the typical presentation environment, attendees can’t possibly see more than two levels of headings on the screen.
After you demote a heading to the bullet point level, when you press Enter to create the next heading it will also be at the bullet point level. When you’re ready to start the next slide, you can type a heading and then promote it to slide title level. You can also use a shortcut to do this: press Shift+Tab to promote and Tab to demote a heading.