Hi Nadhya,
The movie is recorded with TVB version 1.* while you might be running the recommended latest stable version which is 2.4.
All TVB versions >=2.0 have the parameters exploration configuration (PSE) part moved at the end of a simulation configuration.
So, there is noting wrong with your GUI, and theoretically everything that was possible in previous versions is still possible to be configured with the newer versions, just slightly different.
Best,
Lia.