Access to element 'Advanced' features in GUI

[d_p_robinson]

This puzzles me: if I want to override some methods from a base class I have to select the derived class and then go to the main menu Element\Advanced\Overrides and implementations but I can't do this from the context menu \ Advanced. On the other hand there are various weird and wonderful methods on the context menu that don't appear in the main menu. It would enhance the GUI usability to make this more consistent.

On a separate note, I can only get a context menu \ Add operation or Add Attribute once I've selected an element in the attributes/operations compartment. It would be nice to have access to these from the normal context menu.