Best way to find something like notification history is to open the settings and use the search feature to find it. Things like that can be in different places on different phones or with different OS versions.
The simplest way to hide apps is to install a replacement launcher (I use Nova). I don't know Moto's launcher so don't know whether it has such a feature, though for most things I'd start by pressing and holding on an app and seeing what options you get.