Don't have Cupertino option (I know why) on my system and don't wish to enable it to test but maybe here:
https://ubuntu-mate.community/t/how-can-i-add-an-app-to-the-cupertino-panel/21792
Don't have Cupertino option (I know why) on my system and don't wish to enable it to test but maybe here:
https://ubuntu-mate.community/t/how-can-i-add-an-app-to-the-cupertino-panel/21792