I have two different excel addins having different manifest files. I want to install them under the same custom tab.
I tried using same Ids for CustomTab and Group for both the manifest files whereas having different Ids for Control Tag. But this also didn't help me.
Interestingly, if I add both applications in the same manifest file, they appear under the same CustomTab.
The same issue has been raised back in 2017. Not sure if we can do it now. Share custom ribbon with multiple add-ins (manifests)
Appreciate any advise on what I might have missed.