Hi @lalitha_j,
Given the folder structure that you shared in original query + requirement, we need to have any specific identifier for PDFs available under General folder.
Eg : Let say, via tags where those PDFs are tagged as General.
With that, we can introduce an additional property predicate to bring in General PDFs for all school codes.
Example : You will be able to use the path predicate value till school node.
This will bring in PDFs of all category from all school codes. Try to see/identify any specific property (with respect to General category for the PDFs) and add it along with this predicates to narrow down to exact/expected search results.
path=/content/dam/anc/school
type=dam:Asset
nodename=*.pdf