No. Since trades are placed through a single trading account, you receive one contract note. But the credit/debit of shares will happen in the respective BO ID.

Yes, but ensure: The correct BO ID is used in the application form. The trading account PAN matches the BO ID PAN if required by the registrar.

Yes: All Demat accounts must be KYC-compliant. The names of holders (or at least the primary holder) must typically match with the trading account. Brokers may require additional documentation or…