

I think you need to clarify "external site", are you using some sort of integration with REST? If yes, then the UI is up to whomever is developing the integration. Are you using embedded forums? If yes, then it will not nest, this is legacy functionality, considered obsolete and slated for removal in the future.
I'll send you a video in DM Tom Paolucci . We used the steps in this Verint article and then just updated the text to fit our needs: How can I include forum behavior in an external website?
Patrick M. it is embedded... I didn't know this was obsolete. What are the other options?