1. In level 1 i.e AFC, there are 4 papers and you can take as many as you like.
2. Don't know about other academies, but in Alhamd academy you can pay fees for only the papers you take.
3. Every attempt you take adds to your total attempts. If you pass 2 papers in one attempt and other 2 in second attempt, it will be counted as 2 attempts, but individually papers will be called first attempt passed.
Example: I passed QT, FEN, FA1, FA2, Tax in 1st attempt, Eco and BcBs in 2nd attempt and Mlaw in 3rd attempt, but overall my attempts are 4 because I passed all these in 4 attempts.
4. If you skip an attempt, it will not be counted as an attempt.