I am working on a project to build a dapp for a trust system using Quorum, which needs a permissioned blockchain for data privacy. Only the admin, beneficiary, caregivers, case manager and authorized person can access the trust system. I am a beginner of blockchain and Ethereum and all those related things. Here are my questions so far:
1) I have tried to follow truffle Quorum tutorial. That quorum-examples includes the 7Nodes. What if I need more than 7 nodes? And I have no idea how I can use Quorum, not the quorum-examples, to build my dapp. Are there any tutorials not using the example?
2) The trust system involves a number of actors. They have to login before accessing the real system through the frontend website. Admin will be responsible for creating the trust and relevant accounts. How should I set the account of admin? Should I use admin as the owner of the trust system?
3) How should I save those username, password, etc., if I don't want them to be saved on the blockchain?
Thanks in advance!