Hi there, @eiuasa93.
You're right about putting the imported transactions from POS to Undeposited funds.
Currently, this is the only option to match multiple transactions to that one bank deposit in QuickBooks Desktop. You can refer the transactions to be matched through its date. This is how to do that.
- In the Bank Feeds Center, select the Deposit and click Add More Details.
- Select the Undeposited Funds that need to be matched.
- Select Add to QuickBooks.
You may also consider checking out this article for additional reference about matching bank transactions: Add and match Bank Feed transactions in QuickBooks Desktop.
I've added this article for your future task about reconciliation: Reconcile an account in QuickBooks Desktop. This contains sub-articles such as fixing opening balance.
Feel free to tag my name in the comment section below if you need further assistance. I'd be happy to answer them. Take care.