Topic Feeds don't have an option to only apply to a subset of rooms in Skype for Business 2015 (Lync 2013)
Content provided by Microsoft
Applies to: Skype for Business 2015Microsoft Lync 2013
After you create a topic feed in Microsoft Skype for Business 2015 (Lync 2013), you find that there's no option to only apply it to a subset of rooms. Additionally, you cannot filter the top-level search to a specific chat room.