What is "presence" and do you know anyone that has it?

Well Olivia Fox Cabane in The Charisma Myth says it’s all learned behaviors. Although when she talks about presence she means something different. She means actually being present in the interaction that is taking place. Presence, power, and warmth are the three essential elements of charisma according to Cabane.

Presence is the single most requested aspect of charisma when I’m coaching executives. They want to increase their executive presence or boardroom presence. And they’re right to focus on it: presence turns out to be the real core component of charisma, the foundation upon which all else is built. When you’re with a charismatic master— take Bill Clinton, for example— you not only feel his power and a sense of warm engagement, you also feel that he’s completely here with you, in this moment. Present.

I only started reading it on the weekend and it’s a very enjoyable read so far.