Eway Bill - Job Work - Direct Supply and Direct Sales

1. We are sending goods to our job worker Directly On Bill to ship to eway bill basis and Direct sale from Job worker to customer.

(A) while sending directly supplier to job worker (Both are registered person) Supplier Invoice + supplier Eway Bill (Bill to Ship to ) + Principal Delivery Challan (Not mentioning in Eway Bill)

(B) while sale from Job worker to Customer Principal Invoice + Principal Eway Bill (Bill from Ship from ) + Job worker's Delivery Challan (Not mentioning in Eway Bill)

Above documents are enough or is there any requirement for separate eway bill for delivery chellan

2. Job worker is registered under gst, so we are not add his place in additional place of business is this valid?