FROM AIRPORT: Pre-paid taxis are available (government counter). The booking counter will not know the institute: the landmarks are "next to MGR film institute", "near women's polytechnique", "near Indira Nagar MRTS", and you may have to guide the driver. Ola and Uber are also available, and the mobile app shows suitable pickup points, and you can select the institute as the destination.
FROM CENTRAL STATION: Pre-paid and app-based taxis as above, but you can also take the MRTS train from the Park Town station across the road from Central, in the Velachery direction, and get off at Indira Nagar. The institute is a short walk away.
VENUE: Chandrasekhar Hall, first floor of main building. Enter
the portico in the picture below, take the stairs immediately behind
the reception. The door will be on your left near a bust of S Chandrasekhar.