Prevent Essentials from being changed

Is there a way to prevent essentials from being changed?
What I mean is, when I work, I will inevitably just start googling stuff from the address bar or going to websites while in an essential tab. So an hour after I open my browser, none of my essentials are what they were supposed to be and the things that should be under essentials, end up being random tabs everywhere.

Is there some way to block the address bar for essentials so that they always stay what they were meant to be? Or at least have some sort of a one click button to "go back to what this essential was originally supposed to be?"

Thanks!