How to change the transmission fluid?

You have what is called a dual dry clutch transmission which means it is basically a manual transmission that is shifted automatically.

Here is a guide that will help with this type of service, but your vehicle is going to look slightly different:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

So, take a look at the info below that is from the manual and that will show the drain and fill plugs. This is going to be closer to doing this on a manual unit rather than an automatic.

Take a look at this info which includes the fluid that you need to use and let us know if you have questions. Thanks