This was not obvious to me, although it should have been because the message in the Display preference clearly says it.
Go to Spotlight > “Displays” > Click “Arrangement” tab
Drag the thing horizontal menu bar from one display to the external display and viola the menu bar (and Spaces) appear on the external monitor
APPIP ERROR: amazonproducts[
AccessDeniedAwsUsers|The Access Key Id 1ZNGM52M8EWAXJFFRR82 is not enabled for accessing this version of Product Advertising API. Please migrate your credentials as referred here https://webservices.amazon.com/paapi5/documentation/migrating-your-product-advertising-api-account-from-your-aws-account.html.
]
APPIP ERROR: amazonproducts[
AccessDeniedAwsUsers|The Access Key Id 1ZNGM52M8EWAXJFFRR82 is not enabled for accessing this version of Product Advertising API. Please migrate your credentials as referred here https://webservices.amazon.com/paapi5/documentation/migrating-your-product-advertising-api-account-from-your-aws-account.html.
]
omg dude you saved my life. i just bought the 23′ samsung LED 2ms 1080p screen and thought i would have to only use it as a slave :) this made my day!!!
Agreed – this was driving my bats**t crazy. Thank you for this.
Thank you thank you thank you!
You are the guy!
Thank you! Thank you!!!!