Well this is the true scenarios of my friends:
1. He failed his management interview the first time, reapply 6 months after he got the reject letter, got rejected straight away. Then he applied again 6 months later (1 year from the date of the first reject letter), got invited to do a 2nd stage interview, for only the panel interview and job knowledge test
2. Another friend failed his 2nd stage interview, reapplied after 2 years, start from stage 1 interview skipping the initial test part
And an advice to people who are trying to reapply, please TAKE YOUR TIME, don't rush and waste your chance 'coz normally there're only 2 shots for anyone. Make sure you're well prepared, accumulated enough experience and have done enough to show that you're prepared and determined.