Changing your PHP Version in cPanel is quite easy and it would take hardly 30 seconds to do it. Please make sure that you choose php version carefully and incase you experience issues after changing PHP version, you can switch back to previous working version or take developer help or contact HostJinni.com support team.
You can login to your cpane and locate MultiPHP manager option. You can also search the same in search bar to locate.
Click on MultiPHP manager and it will take you to the all php versions available to choose for your all or any one domain or sub domain.
Tick domain or sub domain and choose required PHP version and clickon apply.
You are done.