I have made my local EOS testnet. Almost I followed the Bios Boot Sequence Pages. So I made a "eosio" account and created two block producers that were registered in chain. So three were created.
But BP(block producer) couldn't produce blocks just receive blocks from eosio account.
I find some sentences in the EOS page that:
... Once producers have been elected and the minimum number requirements have been met, that is minimum 15% of tokens have been staked to producers votes, the account can resign, leaving the account as the only privileged account.
Is there rule of "the minimum number requirements"??