Can't create new simulator in xcode 9 beta

I have just installed xcode 9.0 beta. And I'm trying create a new simulator, but it no response when I click Create button (image below). Any idea?

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How do I add new simulators to Xcode?

If you require a different version of the iOS simulator than is provided by your Xcode installation, you can download additional simulators in Xcode. Open Xcode and click Menu > Xcode > Preferences > Select Components, and then choose the simulator version you want to download.

Is iOS simulator arm64?

The iOS simulator's architecture is x86_64 (the latest Xcode doesn't support an i386-based simulator that the answer refers to), whereas a real iOS device (such as an iPhone or iPad) can be arm64 or arm64e. So when building an app for the simulator you need to specify x86_64, not an ARM architecture.

How do I change generic iOS device to simulator Xcode?

Open Xcode, Goto Preferences, Select Component. Click on Simulators of your choice then it will start the process of download & installing the simulators.

Restart xcode resolved my issue.