The SimHub (ShakeIt) software offers adaptable settings to the users.
The developer recommends to include Gear Change effect on all motors for the initial setup, and then continue with adding effects to the selected motors as mentioned below:
Motor 1: Front Right road vibration
Motor 2: Front Left road vibration
Motor 3: Rear Right road vibration
Motor 4: Rear Left road vibration
You can optionally recall (at 50%) the rear effects on motors 5 to 8 (in the back).
It is also recommended to avoid adding too many effects on a motor (for example to prevent permanent effects such as RPM or speed).