Does not appear in Zorin OS 15

[rqmok]

So I saw that this applet supports Gnome, which is what Zorin basically uses, and it uses Ubuntu as its base. I tried installing it using sudo apt install mate-optimus, but after I switched to nvidia graphics card (proprietary), I don't get any sort of indicator. I also don't know if I can manually start or use it through CLI, etc. Is it possible to be able to somehow be able to run this at start up on this distro? Thanks.