For now, we can't modify Start decalration,Tender declaration, Bank drop receipt, Safe drop receipt, X, Z reports in F&O. We can modify other types of receipt such as Sales, Return, Packing slip using Receipt designer. This will help a lot since we get requirements that user doesn't want to see some fields or add some fields in those reports- Start decalration,Tender declaration, Bank drop receipt, Safe drop receipt, X, Z reports.