How did you manage it? I don't get that option when talking to Madison?
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Own the college?
Have you asked about the big three yet and met the pool twins mom alone?
Max college Authority Level? It will say you can’t increase it any further when you are. Which also required a “Great” Education Level to achieve.
After the mother scenario (only the ditzy one as of now), you can Invite them to the pool at YOUR house or you can offer ‘most’ of the students 1-on-1 classes, including the twins.
You may also need to watch the Twins Practice scene at the school pool, but I’m unsure if its needed to trigger the others, since I watched it as soon as the option came up during raising authority ;p