Can't run Kotlin program - necessary to edit configuration

I downloaded latest IDEA, Ubuntu 16.04. I thought it supposed just to work - of out the box. I tried to run ‘hello world’, but when I click ‘run’ it proposes me to edit configurations.

To run the program, click on the gutter icon, as described in the tutorial.

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I don’t have such:

Write the main function outside the class. Right now, it is an instance method, not suitable to be run as main.

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Thanks guys. It works now.