First Travel to Cochin International Airport (COK). This is in Kerala, South India. This airport is easily accessible from any airport in Middle east, preferably Dubai.
From the International Terminal at Kochi ( or Cochin), move to the Domestic terminal that is less than a kilo meter away. From the Domestic Terminal, Board flight to Agatti Island which is less than 1 hour away. Stay at Agatti or from Agatti, branch to Kavarathy or near by Island based on your choice of stay. Kavarathy is the largerly populated Island. This is the main Tourist Island. Agatti is mainly an Administrative Island, so there will be less crowd in Agathy.
Accommodation are either government guest house or Private rented accommodation for a group of three to 5 people and food is included in the package. It will usually cost 5000 to 8000 Indian Rupees per night accommodation in a shared House.
Transport between Islands are using Boat service that takes 1 to 4 hours between Islands depending on how far they are from each other.
Links to Agatti Island – https://en.wikipedia.org/wiki/Agatti_Island
Links to Kavarathy Island – https://lakshadweep.gov.in/islands/kavaratti/
Activities that you could do at Agathy: