merge keywords

How do I merge two keywords in the Keywords Term list?

You can edit the keywords by going to the Endnote toolbar and selecting Tools >Open Term Lists >Keyword Terms List.

In the Terms List pop-up box click to select the “Terms” tab. Scroll down the list of terms and click to select the one to be edited then click the Edit Term button. Make whatever changes then click the OK button. Then click the Close button to exit the Terms List pop-up box. (Refer to attached image.)

but this won’t merge keywords or homogenize or merge these keywords you have already used in the keyword field of your library.  The only way to do that, would be to use the Find and Replace tool (Ctrl+R on a PC) under the Edit menu (it maybe somewhere else in the Mac version).