I had applied for Global Entry for my 3 & 8 year old, both of them were conditionally approved this past sunday. I was able to get an appointment for my 3 year old for 6/29 and my son on 7/3 in EWR. We went for my 3 year old's appointment yesterday which they processed as expected, but they were unable to process my 8 year old although they were not that busy.

The Global Entry personnel said on any given day they only get the details of the persons signed up. So we have to do 1 more trip to the airport to get my 8 year old's global entry application processed.

Hope this helps somebody else out there.