not able to create another app

I want to get the live data values through a websocket connection of more than one instrument at the same time. I am able to subscribe to only one instrument at a time right now.
Also can we create another application apart from the default application given to us?I want to run more than one strategy at once through simultaneous applications. Will be helpful if you can guide me through this. Hope to hear from you soon. 
Thank you.