If you’ve previously saved custom character sets, select the set you want to edit.
To create a new custom set, click New, enter a name for the character set, and click OK. If there are existing custom sets, you can also choose a set on which to base the new set.
To add a character directly, choose Direct Entry from the Character pop‑up menu, enter the characters in the text box, and click Add.
To add a character using a code, choose an encoding type from the Character pop‑up menu, enter the code and click Add.
To delete a character, select it in the list box, and click Delete.