1. To change PHP version and configuration, you will have to login to your cPanel.
2. You can get into your cPanel by first logging into the Snapfrozen client area, then selecting services - How to login to cPanel
3. Once in cPanel, scroll down and look for the MultiPHP Manager in the SOFTWARE Category.
4. For the configuration, scroll down and look for the MultiPHP INI Editor in the SOFTWARE Category.