Hello,

Well usually the candidates get admission based on their general rank and belonging to some community gives the advantage of reserved seats. Other than that, the community rank doesn't really have a solid purpose. Your community rank specifies your position amongst the candidates of the same community. So basically, you will get more chances of getting those reserved seats while getting admission than the candidates of the same community with lesser rank than yours.

Thankyou, I hope it helped, feel free to approach for further queries.