In the scenario I mentioned, it doesn't always involve waiting for someone to always ask you to speak before you say anything, It's primarily the art of holding back on saying anything until everyone else wears out their voices, or until they turn towards you for your opinion.
These days a lot of people feel the need to be first and last to talk. This way, you're in the middle, but not overly invested in being heard, but choosing times when you speak, and choosing your words carefully for relevance, for best overall impact.
Eventually after a while of practicing this, people grow into the habit of looking forward to your input, and they always ask you for it, provided you don't screw up things too often.