Displaying Research Notes In Specific Citations

I’m working on an acedemic proposal. I’m using APA format, but I would like to be able to call/reference the text I’ve entered in the Research Notes section in my Endnote Library for certain specific citations, either through temprorary citations or some other method. I haven’t been able to locate a good guide for how to do this. If anyone can describe how to do this (or point me to a useful reference), that would be very much appreciated. Thanks!