Hello Rafi,
If you want to call a sequence file in CVI, you can start with a simple OI. An example is provided with TestStand and should be located at c:\Program Files\National Instruments\TestStand 3.1\OperatorInterfaces\NI\Simple\CVI\. I would suggest you copy the whole folder to a different location and try experimenting with it.
If you just want to run a sequence with press of a button without loading it in sometihing like Simple OI, I think you can do it by just hiding all the controls and creating a button that executes a specific sequence.
Also, the
link provided by Ray would be very helpful.
I hope it helps,
Rajiv