Personal use - Investment stock

Hi - I’ve set up QF for my personal finances rather than a business - I think I am happy with the structure.

Bank & Savings accounts under General Banking
My Investments (ISA & Shares) under Equity Accounts

My question is, how do I do the following:

  1. Balance the Suspense account which shows the starting balances of the accounts
  2. Which nominal code to use to explain the losses/gains of the investments?

Thanks in advance