This depends entirely on your preference. Although some mediation parts can be solved in these transactions, the final application must be made by the license holder. The batch process is not accepted.

For the ATPL theory exams, 32 EASA countries use the European Central Question Bank (ECQB) system.

‘’ The ECQB is a bank of 10,000 questions (Multiple Choice Questions – MCQs) used by all EASA member safety tool, ensuring that pilots at the European level.

https://www.easa.europa.eu/easa-and-you/aircrew-and-medical/european-central-question-bank-ecqb

Your choices such as ‘’exam days, fees, easy transportation, etc.’’. Will determine where you will take the exam.