... > Labels > Titles and Footnotes
You can displays up to three titles and two footnotes. After you create a graph, you can customize title and footnote attributes. See Edit Title/Footnote-Font and Edit Title/Footnote-Alignment.
Title: Type a title, which replaces the default title and is centered above the graph.
Subtitle 1: Type a subtitle, which appears below the title.
Subtitle 2: Type a second subtitle, which appears below the first subtitle.
Footnote 1: Type a footnote, which appears at the bottom left of the graph.
Footnote 2: Type a second footnote, which appears below the primary footnote.