On the Format Bibliography tab, you can change or verify these settings:
With Output Style: Select the appropriate output style to format references. You can experiment by reformatting with various output styles.
For a typical installation, only the most popular output styles are initially installed with EndNote. If you want to install more of the + styles that are available, see Installing Additional Output Styles.
Temporary Citation Delimiters: These are the opening and closing delimiters for temporary citations. Make sure they are unique delimiters, and not characters you would normally use in your paper. The defaults are curly braces.
You can click on the Layout tab to verify or change those settings. When you click OK on either of these tabs, EndNote saves changes and formats your citations and bibliography.