Can I list my schedule C Travel and Meals (line 24-a) using Quickbooks SE?

Yes, you can add your travel expenses in line 24-a, @Peasantcellist.

However, you can add your meal expenses in line 24-b.

Let me show you how to add transactions manually:

1. Go to the Transactions menu and select Add Transaction.
2. Enter the amount and a description.
3. Select the Select a category menu. Select the best category to organize your transaction.
4. If you have a receipt, you can drag and drop it onto the form.
5. When you’re done, select Save.

You can also check out these articles in case you're adding multiple transactions: 

• Add Older Transactions To QuickBooks Self-Employed
• Manually Import Transactions Into QuickBooks Self-Employed
• https://www.irs.gov/pub/irs-pdf/i1040sc.pdf

The Community is always here if you need more help with listing your Schedule C expenses. I'm always here to assist. Have a good day!