PLM4P is using a YUI rich editor approach by default. This component definitely supports font customization.
However, the out of box wrapper in PLM4P doesn't involve any particular fonts.
This tip is suitable for the situation that customer wants a global extension upon the rich editor font selector.
Alternatively, it's more recommended to use the third-party rich editors for more customizations on v6.2.2+.
1, Edit file '<PLM4P_HOME>\Web\WebCommon\scripts\Ui\RichEditor\RichEditor.js' with any text editor.
2, Directly add the new fonts at below position.
3, Save the JS file and reset IIS.
4, Review the frontend UI.