Starting Balance

I'm looking for some help with my accounts before looking into reconciling with our linked bank account.

We have been using quickbooks since Feb 19 to get up to speed for MTD.

On opening the account we never entered a starting balance into the quickbooks account but we have linked quickbooks to our bank account.

I'm confident quickbooks is working and the account is up to date but we have never used the reconcile function and the account balance in quickbooks does not tie up with the account balance in the linked bank account.

Is there a way to insert an account opening balance into quickbooks as of the date we began using it to align the accounts.