But there is no way to configure this. Theory x practice do not work.

What is an iceberg order?
Imagine you are looking at an iceberg in the ocean. The part above the water is very small, but underneath the water there is a huge part that you cannot see.
This is exactly how an iceberg order works in the financial market. How does it work?
• When someone wants to sell or buy a large amount of something (like stocks, currencies, etc.), instead of showing it all at once in the market (which could scare or manipulate other traders), they only show a small part of the order.