SubScribe/UnsubScribe Parse Push Notification -- 2

Hi ! I want Implement Function for Subscribe / Unsubscribe Parse Push Chanel via Checkbox from settings page. I have ready Settings Page, Parse Implemented. You just need to implement condition for Subscribe / Unsubscribe channel. You must know that this is just 5 to 7 line code need to be write and must do via Team Viewer. Project Price is fixed $ 10. Instant Payment and Instant Review :) Thanks