J805
28
Yeah, that is not how I would structure it if you want to manage both in one repeating group.
To do that, make one dataType for both of them. They can share any fields that are similar but then you can have a field on there (normally I use an option set) for the type of thing, either a ‘timer’ or ‘matetialer’. Then you can display it in one repeating group without an issue. Just remember to have the parent order attached to it so you can reference them easily.
Does that make sense? 