WP ERP is completely free of cost, you can download and install the plugin right from your WordPress dashboard just like any other WordPress plugin.
Yes, you definitely can! The whole plugin is divided into three parts- HR, CRM, Accounting based on features and the source code is separate for each module. So you can turn on or off any module you like from the settings.
WP ERP and all its extension are open source and the source files are well documented. So you can customize any feature you want. Our support service is always there to help you with information to get you started.
We’re sorry to inform you that we do not offer customizations. You can post your requirements on a marketplace like upwork, freelancer, PeoplePerHour etc.
We are always here to help you with information to get started.
You can use one ERP installation on 1 database. That means one WordPress installation can have only one ERP activation. You can definitely install and activate the plugin on a single subsite of a network installation. But WP ERP can not be used across multiple subsites of a network installation.