Yes. eazyPNR brings FD & Series Fares (Fixed Departures and Series Fares) from many sellers into one search, so you can see the Kuala Lumpur (KUL) to Tiruchirapally (TRZ) departures, the seats left on each date and the cut-offs without phoning anyone. Seats come off the same live count with every booking, so what you see is what is left.
For a group, check that enough seats are open on one date, note the name deadline, and collect the passenger names early. Each seller decides its own agent fare and payment terms, such as prepayment or a deposit, and shows them before you confirm.
Start with the Kuala Lumpur to Tiruchirapally fixed departures page for the upcoming dates, then register to see fares and book.