Go to Settings, Apps and notifications, App info directory. Find the application you want to move. Press "Storage". If the application supports the migration feature, a "Change" button will appear. When you press the button, select the SD card in the window that opens. Click "Move" in the confirmation window that opens. In order to move applications between storage units in the Android 8.0 operating system, it is necessary to do the same operations in Android 9.0. However, we showed them both under different titles in order to be more explanatory. Again, there is a detail to keep in mind. The application you want to move must support this feature. Also, you cannot move preloaded applications.