Hi,
I don't think you can do this without an extension as Qlik doesn't detect a 'click' anywhere other than on data. As far as I know.
When I have done this before, I have used a transparent text box which sits over the dashboard, but under your container. Then this text box triggers the hide of the conatiner.
To show it when you click on the main tab, just use a sheet trigger to set a show variable.
Please let me know if you want a demo if this as I am sure I can knock one up quickly.
Please remember to mark this as helpful or the correct answer if I have helped you or answered your question.
