Business & farm

You'll find section 1256, Contracts and Straddles under Less Common Investments and Savings this year.   After clicking Start, answer Yes, that you have straddles/sec 1256 contracts to report.  

The next screen will ask about any applicable elections/Form 6781.  

The next screen is where you will select the type of transactions you are reporting (gains/losses/marked to market).  

The next screen is where you can choose to summarize the information by broker.  

Enter the summarized data from the first broker, and then on the Contracts Summary page, click on +Add the add another broker summary