As Andy mentioned you can make use of a KPI to drill down into other sheets. That being one of the methods, you can even achieve this by building extensions. I have built an helped others build an extension which will help you navigate to any sheet on clicking an image or a button etc....
How to get Drop Down menu values from the Sheets This thread has the extension attached to it. You can download the extension file from the thread and modify the UI to meet your requirement.
I believe most of the issues in QlikSense which are not implicitly available can be achieved by building extensions.