You should go to Xcode -> Open Developer Tool:
Using "Simulator", you could run iOS and tvOS, but "Simulator (Watch)" will only run watchOS.
Go to Hardware -> Touch Pressure:
To simulate a normal press, use Shift-Command-1 and a deep one, Shift-Command-2.
If your MacBook has a Force Touch trackpad, you could use your trackpad force to simulate 3D / Force Touch.
Home button
You should use Shift-Command-H to have an animation when closing an app.
Lock
To lock the device, use Command-L.
Rotation
Use Command with arrow keys.
