Installation process of Minimal product quantity module on own hosting is very easy and intuitive. Its just enough to use PrestaShop's interface to install it - exactly the same as installation of other modules.
Installation guide of MyPresta modules
Video guide
Please note that this installation instructions are related to other module, but you can install minimal product quantity plugin in the same way. It is just universal way to install modules. Especially modules from MyPresta - our modules do not require advanced installation / modification process. Just follow the steps and during "upload" use minqc.zip file (module library downloaded from my orders section ).