Tell the motor to move by the specified number of steps and then stop.
Where StepperMotor is the name you have given to the device in Project Designer.
The number of steps you want to move by. +ve numbers will rotate one way and -ve numbers the other.
A positive number will make the motor turn clockwise, and a negative number will make the motor turn anti-clockwise.
The motor will accelerate in the required direction and then slow down as it approaches the goal.