Hi 0.001 HR is enough to enter.
I also have updated the script from steem to hive. So tomorrow there will be displayed hive and no longer steem.

Here you find an article about rshares:
https://steemit.com/steemdev/@jfollas/write-a-steemit-web-app-part-13-how-to-calculate-a-vote-s-rshares