Setting up VPN for popcorn time? topic

Im not sure where to go for this, but i have a nexus player and am trying to setup popcorn time to run thru my VPN. Im not sure how to go about this, my router is a motorola surfboard with built in WiFi, is there a way to set it up to have just popcorn time run on the VPN and other apps (netflix / hulu) not on the VPN? Does anyone know a guide on setting up the VPN on the router? Thanks!