Someone in your group needs a refresher course on what exactly is going on. They've been out of the loop for quite a while now. It's up to you to cover all the details with them, so try to take care of that business as early in the day as possible. Don't adjust your schedule to accommodate theirs. If they need to learn these things, they need to do so when it's most convenient for you.
Your birth chart is a map of the sky at the moment you were born. Download the Sun Signs app to find out how the planets’ positions influence your life.