Can i do this in unity ? Make maximise button??????

Hello

I run my porject in Windowed mode. I want to activate the maximize button to make my game in the screen (( not in full screen )).

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In the game window, where the game actually plays, on the right side top, has a button titled "Maximize on Play" which if active will make the game window take up the entire screen that unity is using.

Not working. thanks