I'd be more than happy to walk you through the process of matching multiple transactions with one expense.
If the expense was downloaded from your bank, you can look for those entries by clicking Find match. Also, you'll be able to match with multiple vendors. Simply ensure that the total of these transactions equals the expense.
Let me show you how:
Go to the Banking page and select the account where the expense is downloaded.
Click the entry to expand it, then choose Find match.
From the Match transactions page, mark those expenses you've entered in QuickBooks.
You can also select Show to open other transactions.
Click Save.
You can only associate the transaction with one vendor in QuickBooks if you use the Expense featureto record the transaction. How to use the payment is as follows:
Go to Expenses from the left menu.
Locate the expense you've entered and it.
Open transactions will automatically appear on the right side.