How to play co-op split screen versus/horde on pc in Gears of War

I'm trying to play the co-op versus or horde mode on split screen PC using two controllers but it is not giving me the option. I am able to activate the guest account on co-op campaign but versus

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How to play co-op split screen versus/horde on pc in Gears of War

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How to play co-op split screen versus/horde on pc in Gears of War

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