Can I add 'amplify' to the list?

As well as listening and not interrupting, amplify the women who are being interrupted or not called on. A simple "I'd like to hear the rest of what Angie has to say" goes a long way to showing your support and obviously, making sure the women in the room are heard.

It's one thing to not be 'that guy', but we need guys to stop their friends and colleagues when they're being him.