Thanks for your post. You can do this, but it's not entirely elegant. If you go into C:\\Users\\%user%\\AppData\\Local\\Red Gate\\SQL Prompt 5 you should find a file called RedGate_SQLPrompt_CommonUI_Options_UIOptions.xml.
In that file, you'll find the following strings:
All you need do is change them to the following:
The column picker itself still says that to enable it hit CTRL+Left etc, but it's actually Shift that operates the switching to and from.
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