Do you know if you only have the "Lite" version of Accordance. According to this page, the Lite version doesn't include the Research Tab (or, it is disabled).
You can see what version of Accordance you have by going to "Help" -> "About Accordance." I'm not saying that I know for sure why your "Research Tab" option is greyed out, but if it is because you have only the Lite version, then I would highly recommend upgrading.
Here is a screenshot showing just a small sample of what the Research Tab can find when you do a search across all resources. Pay attention to the column on the left.
Edited by TYA, 02 December 2019 - 11:39 PM.