It's been a while since I worked with GeoQlik so I don't remember everything but you definitely can add your own shapefile in GeoQlik and it's very easy to do so. There were limitations to the size of the file that sometimes could be a pain.
I just can't for the life of me remember but I do know I downloaded sensus information and created apps using those shapefiles. I remember it was easy once I figured it out. I think it's something on the server piece. So it's either on the server piece or the configuration tabs for the extension within the document.
Their avaiable documentation is lacking so I feel your pain.
If you have support send them an email, if you don't send one anyone saying you are thinking of purchasing and need some info. Meanwhile start poking around on the server components that's where I think you will find it.
I am so sorry I am just drawing a blank on it it's been less than a year. I will definitely search for emails from their support and see if I still have one with that answer.
GeoQlik Trial version will allow you to connect to our GeoQlik Server and its lot of geographic data.
You can contact us (firstname.lastname@example.org) and we can demo and discuss a Test licence so that you can add your own Shapefiles. GeoQlik for QlikView installs easily on your laptop alongside your QlikView Desktop or your QlikView Server.