How to enable call recording in Sandbox environment

Hi,

I want to retrieve call logs and call records. For that i have given permission to Read Call Logs and Read Call Recordings.

But in Sandbox Environment there is no automatic call recording,

I want to create some call recording in sandbox environment to pass the graduation test.

Could any one help me in how to achieve that?

Also i am not sure why i need to create new APP if i want to update the permission? Its very strange.