unless multiple businesses are included on line 2 it doesn't make sense that there is 199A info for multiple businesses. thus this is likely. I would do the simplest thing. check the first item. when you get to the point to enter the 199A info check the aggregate box and combine the related 199A items.
income/loss, UBIA, W-2 wages
otherwise, you would need a breakdown of the income on line 2 by business. then you would enter each business on its own k-1 along with the related 199A info