Open a terminal and run the following commands in the terminal:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install qt5-default libqt5script5 libqt5quickwidgets5 libqt5multimedia5

Then download the Camera Controller archive (ideally using “wget” command).

wget "url to archive"
tar xfvz cameracontrollerpi.tar.gz

Finally you can start the application as follows:

./cameracontroller