Follow these steps to find the Applications Manager:
Open the Settings app. It’s found on the Apps drawer.Choose the Apps item on the Settings app screen. On some Samsung tablets, first touch the General tab and then choose the Application Manager item.

What is App Manager?

The Android App Manager is a tool that helps to manage all the apps which are installed on Android phones and tablets. App Manager shows you detailed information about an app. To see which apps use what resources on your device, tap on the App Manager from the device home screen or app drawer.

The Application manager has long come standard with Android. It’s given us the ability to govern our apps – built-in or otherwise – as we see fit. With the Application manager on the Galaxy S7, you decide what permissions your apps get, what notifications you receive, and more.

How do I install apps?

Download apps to your Android device
Open Google Play. On your phone, use the Play Store app . Find an app you want.To check that the app is reliable, find out what other people say about it. When you pick an app, tap Install (for no-charge apps) or the app’s price.

From any Home screen, tap Apps. Tap Settings. Scroll to ‘APPLICATIONS,’ then tap Application manager.