There are many applications that can help you increase productivity and Split Screen is the best suggestion for you. With this application, the information needs to be stored, read the document completely expressed easily. You will not need too many complicated operations but the work is still handled quickly. Besides, depending on the main purpose, you can refer to the application from the group Productivity.
The Android Oreo shortcut to activate split-screen mode by long pressing the overview AKA recent apps button was removed in Android Pie. This app fixes that.

This app adds optional shortcuts to toggle Android's split-screen mode like:
• long pressing the home button
• long pressing the back button
• long pressing the overview button
• tapping the accessibility button
• tapping on a notification in the notification drawer
• pinnable shortcut to toggle split-screen mode (intended to be used by 3rd party apps like Automate)

Extra features:
• option: "More settings..." > "Emulate home press on split"
Split Screen is an application that every user should have in his smartphone. It will help you improve your productivity. Moreover, with a vivid visual interface, everything will be resolved faster. Thus you will have more time for other jobs or personal interests. Please download the app Split Screen from the repository APK Voz to enjoy.