This feature is only available in the Subscription Release of Quicken Home & Business
To add business accounts:
Note: After adding a new invoices/receivables account, you can enter any previously issued but unpaid invoices that you want to track. When you create the invoice, just remember to predate it.
For expanded instructions, see How do I add a business?
-------------------------------------------------------------------
Since the article refers to "Spending" accounts I assume that word encompasses Checking, Savings and Credit Card accounts, just like it does in Quicken versions below the H&B version. Are you finding that not to be the case, that only Checking and/or Savings accounts are available?