You can customize the editor toolbars in two ways:

1. Update the editor XML file (manual)

 a) Copy UltimateEditor.xml file from UltimateEditorInclude to your web page directory
 b) Rename UltimateEditor.xml as YourEditor.xml
 c) Edit YourEditor.xml to have the toolbars, buttons and dropdowns as you wish
 d) Set the EditorSource property of UltimateEditor to YourEditor.xml

 Almost all the samples use this approach to customize the editor toolbars.

2. Use the Toolbars collection (programming)

 a) Load the toolbars from the XML file specified by the EditorSource property to make modifications on it, or
 b) Create new toolbars from scratch

Please refer to the Server-Side API samples to learn more about programming the Toolbars collection.