...
If you want to use Kinematics, you will firstly need a Kinematics Controller This component controls all Kinematic Transforms in the scene.
...
Step 2. Add a Slide Switch to the Slider
To create a Slide Switch and assign it to a GameObject, select the GameObject and go to Standard Components > Slide Switch > Add Physical Component. In this case, select the Slider and add a Slide Switch.
...
The Slide Switch is automatically created with a Prismatic Joint attached to it.
...
Step 3. Create a Spline for the Prismatic Joint of the Slide Switch.
...
To make an LED light up when the slider reaches it, add an Indicator Light to each LED.
To add an Indicator Light , go to Standard Components > Indicator Light > Add Physical Component.
...