Don't want to derail... please add thread replies if better:
If you've created a custom sublist based on a saved search, which is displaying custom records (I have this on my item records showing the custom records (materials) which are children of the item)... can I have a quick "Add" button that allows me to quickly add new materials (child items)?
I added a field which is sourcing from these as a workaround for now and I can click the plus or "add new" in that field to trigger the pop-up. The only issue with this workaround is that the pop-up isn't defaulting the "Item" field of the parent and that has to be manually selected. This isn't a problem in testing but will be once I have 20k something items uploaded in production.
Thoughts or ideas along the lines of making the pop-up associate to the parent item record being edited/created by default?