how can i add android app for automatic start when pc open ?
You may try this:
i try this but i cant find how set app for startup app , u know how use this program ?
Read the README. Nobody can guide you step by step.
I read it but I couldn’t do it 
I tried it and it works fine. It was written clearly. If you don’t know how, then give it up. Just pin the android app at the bar and click it after boot up.