How do I add a new bibliographic style file to the EndNote database?

I would like to add a bibiographic style file to EndNote for the journal Pacific Science.  I have the .csl file ready to go and have already added it to the GitHub system for use with Mendelay, Papers, and Zotero. However, I have been unable to locate accurate instructions for adding this file for inclusion in EndNote.

Thank you,

Pam Wilson