Assuming you are using a fully-equipped Motion Character (as set up via "Clone the pre-configured Motion Character"), there are a few ways you can modify Motion in order to make it fit your needs better.
To change how the camera for the character is set up and positioned, you can select the MotionCameraComponent in your character blueprint and find some settings in the Camera section of the Details tab.
Check out Motion Camera Component for more information on the configuration.
The change the amount of speed that the character can't go under at (to avoid too many speed penalties (i.e. from crouching) from preventing the character to be unable to move), you can click on the MotionCoreComponent of your character, and under Component Speed in the Details tab, you can adjust the Global Minimum Speed variable.
By default, Motion only applies a static multiplicator onto the input it receives. You can change that multiplier by changing TurnRateCamera in the Class Defaults of your Motion Character.
