UML Class Diagram

[C# Programming]

Not sure it it the right forum .. anyway forgive me
I was using VS2010 UML Class Diagram
Adding many "operations" to a class, apparently I'm not able to decide the visualization sorting. So if I have a sequence of operations (let's say:

+Operation1()
+Operation2()
+Operation3()

I'm not able to change order, like

+Operation3()
+Operation1()
+Operation2()

I did not find any help on msdn

Thanks for your time