You can enter diacritical characters, Greek characters, mathematical characters, symbols, and more into your EndNote references by using the Character Palette. How you access the Character Palette may differ depending on which Macintosh operating system you are using.
Access the Character Palette:
In EndNote, go to the Edit menu, and then select Special Characters (available only under certain Macintosh operating systems), or
In the Finder, go to the Edit menu, and then select Special Characters.
To use the Character Palette:
In the View list at the top of the dialog, select the type of character set you wish to display.
Select the type of listing, such as "By Category."
In the left column, you may be able to select a category to display a list of characters in the right column.
Click on an individual character.
To display more information about the selected character, click the triangle next to Character Info.
To see how the selected character varies between fonts, click the triangle next to Font Variations.
To add the selected character to your personal list of often-used characters, click the Add to Favorites button. Once characters have been added to your Favorites list, you can click the Favorites heading to display only those characters.
Double-click on a character to insert it at the cursor.
Or, with both your EndNote reference open and the Character Palette open, you can click on a character in the Character Palette and then drag-and-drop it into your EndNote reference.