Clamshell Mode

With Big Sur and the disappearance of Energy Savings (now Battery?), I have no idea how to have my external monitor not turn blank when I close my Macbook Air.

Did Clamshell mode disappear? Tragic if it did.
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andyn1331
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Sorry, just figured out the problem. My Macbook wasn't plugged in. Once I plugged it in and went to clamshell everything worked as it should, and I didn't even need to change settings anywhere.
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andyn1331
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It should work once plug into the power adapter. it does not work in battery power.
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chamithc
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Would be great if it did not require me to be on power.

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Richie999
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