Huawei MatePad 11.5" User Manual page 39

Essentials
dragging the slider to the left or right will switch the left and right panes. Any switching
operation will only apply to the current task, and will not affect how other tasks are
displayed.
Creating a floating window: When an app with App Multiplier enabled is displaying in
dual-window mode, you can touch the slider above a window, hold and drag it to move
the window to the center of the screen, and release once the floating window appears.
Touching the slider above the floating window, and holding and dragging it back returns it to
the parallel view.
Adjusting the window sizes: Touch and hold between the windows, and slide left or
right.
Unlinking the two windows: Touch at the top of the screen.
Some products do not support adjusting the window sizes or unlinking the windows.
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