Parse Dashboard: where to get APP_ID, MASTER_KEY etc. values?

Question

JavaScript

Understanding Parse Dashboard. There you need to enter the values ​​​​of APP_ID, MASTER_KEY and others. Where are they generated? I have an app on Heroku, the Config Vars menu is empty. There is an instruction there, I tried to enter and assign the values ​​APP_ID, MASTER_KEY - but after that Parse Dashboard does not connect to the application on Heroku.