Hi!
There is no predictability in the configuration of the EMUs' that run on the Beach - Chengalpet line. One day, the 1st/Last compartment is only for Ladies, 2nd only First Class, ... and the next day the same service runs with 1st/Last compartment being General, 2nd compartment First Class & Ladies, ...
This creates a lot of chaos on the platform as people wait at a certain place and have to rush...