In Bex's book there is an example that does exactly this. It is placed in chapter 8. It is about UCM 10 g, but if you find the resources that should be overwritten to show the link in menu bar it will work perfect in UCM 11g
As this drop down is now different in UCM 10gR3 this no longer appears to work (I get an error when adding these as a resource file) I presume I need change this include "$include super.custom_searchapi_result_options". How do I find out which include to use? I am quite new to creating custom components.