hi, let me give an example how to calculaate stake.
lets have this one bounty campaign have 1 btc pool and only run for one week
the rule is :
1. 1 stakes for jr member
2. 2 stakes for member
3. 3 stakes for full member
and the participant is 3 jr 3 member and 3 full member so total stakes is 3+6+9=18 right ? total 1 btc as a prize divide by 18 thats mean each stake get 0.05555555 btc. thats a quick esplanation maybe someone will tell you more after my post.
Thanks for the info, I was wondering about this myself!