How to select other dependent credit for a child in turbotax

Two children. First child is a US citizen eligible for $2000 credit. Second child doesn't have SSN or ITIN. I'm planning to attach W7 with a tax return. In this case, a second child is eligible only for ODC.

 

I've left SSN field empty. Later in 'Deductions and Credits' section I can see $2000+$2000=$4000 credit for both children which is incorrect. 

Looks like a trivial question but I'm stuck. How to select OCD for a child in turbotax?

Some historical context:
last year ITIN for my child was rejected. Reason: wrong child credit, should be OCD. So I need to find a way of correctly/clearly indicating it.