Staging app with prestashop

I’ve implemented my prestashop site to cloudways using github and have been updating it using my private repository. I would now like to explore the features of using the new Staging app feature on cloudways. I have a few questions. How to make changes to the Staging site firstly without github? When i open the Staging site it seems to be the same as the live site. And if possible is there a way to integrate the Staging to github without it being linked to the live? I tried generating a new SSH for the Staging but did not get any results. Any tips and/or steps followed from anyone that has successfully used the Staging app feature with prestashop would be highly appreciated.

A better question would be if the staging has a different url, and if so, what is it or how do I add it if that’s what I have to do?