HOW TO FORM CMP-08|COMPOSITION SCHEME|GST FILING

I had 2 query with related to composite dealer if you can help me out it would be fine


1. A Composite dealer, dealing in garments retail, He had purchased few Cctv camera for his store, the seller of the cctv has put his gst number in the invoice..
Now in the purchase b2b column it's showing
Can you help me out- Do he had to show this invoice of Cctv camera in gst 4 annual return, if yes In which column ??



2. Where to show credit note in GSTR4 Annual Return??



If any clarification, please message..

Thanks