Toolbars in Designer

Why, oh, why can’t I create my own toolbar in Designer so that it shows?

When in Designer I go to Preferences and click either User Preferences or Toolbar Preferences the dialog shows and in the background I’m switched to Notes. I can then click New Toolbar and give it a name BUT I CANNOT CUSTOMIZE IT! It never shows in the Available Toolbars list when accessing Toolbars in Designer. It does show when accessing Toolbars from Notes if I close Notes/Designer and reopen.