The mod adds a brand new place to Icewind Dale: Enhanced Edition - Below & Below Inn. Are you looking for a place to rest between the battles? Or perhaps you need some nice new items? Or maybe it's work what you actually need? It's all there!
To visit the new place, talk to the writer in Kuldahar. He'll inform you where you should look for Below & Below Inn. He should be there, waiting for you to speak with him.