Need Help in customizing a Qliksense application

i have a qliksense application hosted on AWS. The application is on QLiksense hub, i need to do some minor customizations on the dashboards like adding a new button to the application and on that a new pop up window should be coming which will have drop down options and on each drop downoption will be linked to a databricks notebook page. I need someone who knows qliksense which is hosted on AWS , html, r, python , css , js knowledge .