To install more modules or build supports for a certain version the Unity editor, first, open up Unity hub. Then click on the Installs tab. From here you will need to find the version of Unity you need the additional modules for. Click on the three-dot dropdown menu and select add modules. You can then check the box for each module you wish to install. Afterwhich click Done. Depending on your computer, network connection, and how many modules you selected, the installation process will take several minutes to install.