Athens Stock Exchange - Derivatives

• How can I get buying power?
• Orders in derivatives
• What do I do in case of margin call?
• How do I ask for shares to be unblocked and when do they become available?
• How can I ask for money?
• How do I receive Transaction Confirmations and Statements?
• What are the financial obligations of my position in derivative products?
• Is margin the same for all products?
• Are the expiration dates of the derivative products predetermined?
• Changes in Future Contracts sizes