Hello, ­­­­­

I am just checking about the progress of this issue. Let me know If you need my further assistance on this  issue?

Thank you for using Infragistics Components.

Hello,

In order to customize this strings you should use ResourceCustomizer, on the following link you could find How to Customizing Assembly Resource Strings:

http://help.infragistics.com/Help/NetAdvantage/WinForms/2010.2/CLR2.0/html/Win_Customizing_Assembly_Resource_Strings.html

I also give you the exactly strings that you need

QuickAccessToolbarAboveRibbon

QuickAccessToolbarBelowRibbon

MinimizeRibbon

And on the link below you could find whole list of WinToolbarsManager Recourse  Strings

http://help.infragistics.com/Help/NetAdvantage/WinForms/2010.2/CLR2.0/html/WinToolbarsManager_Resource_Strings.html

let me know if you have any further questions.