Eligible Automatic Contribution Arrangement (EACA) or auto-enrollment credit Form 8881 & Form 3800 for 2 businesses

My wife and I each have a separate small business with one different employee for each business. We can't figure out how to get two $500 credits for each of our employee pension plans with auto-enrollment. One Form 8881 is generated that can be linked to only one of our businesses, but not two or both. Likewise Form 3800 only shows the $500 credit for one of our businesses. How can be double our credit to $1000? TurboTax seems constrained to one Form 8881 and one Form 3800.