103279519 : The ballotment is done according to tier (can refer to previous IPO ballotment results for reference), and same amount of share would be allocated to the individual successful on that particular tier, regardless of number of share you actually apply, number of share allocated varies for different IPO, but tier remain the same
For example, the lowest tier is 100-900 share, so individual who apply for 100 share and another for 700 share, both would have equal succes rate, and would be allocated the same amount of successful. So people are advised to apply to lowest possible for that particular tier, to avoid wasting extra money held, that actually yield no benefits.
Lowest share for each tier is 100, 1k, 2k, 3k, 4k, 6k, 11k, 20k, 50k, 100k and so on

103279519 : The ballotment is done according to tier (can refer to previous IPO ballotment results for reference), and same amount of share would be allocated to the individual successful on that particular tier, regardless of number of share you actually apply, number of share allocated varies for different IPO, but tier remain the same
For example, the lowest tier is 100-900 share, so individual who apply for 100 share and another for 700 share, both would have equal succes rate, and would be allocated the same amount if successful.
So people are advised to apply for the lowest possible share for that particular tier, to avoid wasting extra money being held, that actually yield no benefits.
Lowest share for each tier is 100, 1k, 2k, 3k, 4k, 6k, 11k, 20k, 50k, 100k and so on

103279519 : 20000 is the correct lowest share for the tier, no need 20100