How to declare Sales in ectax new portal

Where I have to declare my Sales in Tamilnadu Sales tax eCtax New Portal Nature of transaction Annexures /       Base Form Sales Transactions :-   Local sales to un-registered dealer (Net figure i.e Sales-Return) Base Form Local sales to registered dealer for first schedule goods 15 Local sales Return to registered dealer for first schedule goods 19 Local sales made by Local agents to be declared by Principal…