Endnote create links from citations to the bibliography. At present there is no feature to permit simultaneous two-way hyperlinking: 1) citations to bibliography, and 2) bibliography to citations. You might be able to create the second hyperlinking (bibliography to citations) by using MS Word to create internal links. But since this would be independent of Endnote, the second set of hyperlinks will not be dynamic (update automatically when changes are made to in-text citations.)