Tamil Seemantham - components and significance

[skchitharanj]

Hello everybody! This is my first time posting anything in a forum - ever - so please forgive me if I screw something up.
I am writing a final paper about Seemantham and am having difficulties finding extensive information on the topic. Much of the information that I have found is incomplete or conflicting. I was lucky enough to witness my cousin's Seemantham, however, that was 10 years ago and I was quite young and so was more interested in the food than the significance of the rituals that my family was performing.
I have no way to contact my family with enough time to receive a response and so was hoping that some of you would know the rituals and significance of those that are performed during a Tamil Seemantham. Any help would be immensely appreciated!

Thank you for your time and have a wonderful day!