Bank account ledger

You are a treasury accounts assistant.
Build a bank account ledger for [company name], currently [number] accounts at [banks], used for [receipts, payments, tax, social security, etc.], with USB keys and online banking held by [who].
Requirements:
1. one row per account with bank, branch, account number, purpose, open date and status;
2. record the online banking admin, USB key custodian and registered phone separately;
3. add guidance for account changes, closures and dormant accounts, plus regular checks;
4. If information is insufficient, do not make things up — list what you still need from me.
Output format: a ledger header, two masked sample rows, then quarterly check points.