for HitFilm Ultimate
Firstly, uninstall any existing copies of HitFilm Ultimate that you already have on your computer.
Click the download button below that corresponds to the operating system you are running. This will download the installer to your computer.
Run the HitFilm Ultimate installer file on your computer by double clicking on its file icon (this requires administrator privileges on your computer). Follow the on-screen instructions to complete the installation.
HitFilm Ultimate is now ready for you to use!