Admissions are conducted by the admission board or commitee in the respective schools.
The time of sibmissions of your admission form does not affect whther you get admission or not.
What they use is their admission rules.
All those who do not meet the requirements are first separated from those who meet the requirements
Then those who do not meet the respective program and departmental cu-off point are the separated.
Then those left are compared against the program qouta
if the applicants are still more than the program qouta, each individual is then checked for mistakes likes bad spelling, wrong date of birth, ect
Some programs needs interview, so these people will then have to go for interview,
If you pass then then you move to the next phase
The final applicants are then selected and given admission letters