Hey there, John Wildgoose.
We're unable to recommend on what VAT codes that you'll be using on those situations. If you're unsure of what code to use, you can check with your government or accountant. They can provide you with the best input in every situation provided. You can always check this article for future reference: Common VAT Codes.
You can safely assume that a VAT has been charged once your supplier will provide you a bill with the VAT calculation. Once you have them already, you can record them in the system. Thus said, it's better to ask the full VAT bill.
If you have other questions, you can always leave a comment.