I left it last year on finding the Attached Detail Groups and turning them on. There is also functions for hiding them (probably should do that first in the script so you have a clean start point.)
Small test file to go with the example:
AttachedDetailGroups_1_3_3.dyn (52.4 KB)
Group.GetAttachedDetailGroups.dyf (2.9 KB) Group.ShowAttachedDetailGroup.dyf (4.2 KB)