How do you Soften Skin in Adobe Photoshop Lightroom Version 4.0?

I'm new to Lightroom and for the most part have found it very intuitive or been able to find tutorials online to help me figure it out. But when it comes to "Skin Softening" every tutorial I can find online are people using Lightroom Classic and the interface and tools are completely different. I've been told over and over how great Lightroom is for doing this and yet can not seem to figure out how to do it in this version of the program. I'm on a Mac and this is the only version of the program I can find on the App Store. What am I missing here? Any suggestions on how to figure this out?