Firstly, I'd like to thank you for your detailed post! It seems you're having trouble understanding how car setups work in Motorsport Manager.

To start with a brief explanation:

1. The goal is indeed to make sure all drivers are happy and comfortable while driving.

2. Each driver has specific preferences regarding various aspects of the car setup, such as front and rear downforce (or 'diff'), suspension stiffness, tire compound hardness/softness, etc.

3. When you enter a race weekend, there's usually an option to 'Practice' before each event.

Here are some tips for managing practice sessions:

1. Understand your drivers: Each driver has specific preferences regarding car setup parameters (e.g., some like more front downforce while others prefer less). Experimenting with different setups during practices can help you understand what works best for each of them.

2. Adjust the car gradually: Don't make extreme changes to a setting in one go - this will likely either completely alienate your driver or not have any effect at all. Gradually tweak parameters until you find an optimal balance that keeps everyone happy (or as close to it as possible).

Motorsport manager car setup guide