How can I create a Popup with navigation sidebar?
Like in the photo.
Here you have a solution. maybe its not the best.
It’s not working in my case, I’d need master page and master details page inside a popup.
Is it possible to do it?
See more info here: Master-Detail Example?
Yes. Just use some css to set the left view with and hide it. I just make a proof of concept. You should adapt the code to your needs.