In-order to get with this feature on your iPad you will need to follow up some procedures as written below :
Enable multitasking gesture
The device comes with this feature enabled by default. You can check it out by opening the Setting > General > Multitasking toggle (scroll it down) & check if its enabled. If not just tap on the toggle once again.
Switch up to reveal the multitasking switch
Just anywhere on the screen, swipe to upwards with multiple fingers to get the multitasking switcher. Now you can find here all the apps you opened. You can switch between them and open any one you wish to by simply tapping over it. To kill one, just drag it upwards.
Switch to right or left to view your apps
You can switch between apps in your device by using any number of fingers. This feature is not available in most other similar devices.
Pinch to open the Home Screen
Instead of pressing on the home screen button, you can simply use your four fingers pinch to close a app