Brief: Dimofinf V.4 has separated each module and addition to be plugins that can be installed and activated when it is required, so you don't have to install any module or addition that has no need.
To manage plugins, follow the below:
1- login to the control panel.
2- From the side list, select (Tools)> then (plugins manager) as shown in the below picture:
Three option will show up as below:
Activate and Deactivate: press this icon to change the status of any module or addition, noting that the content will not be affected.
Upgrade: if you want to upgrade any plugin, just upload its files and press this icon.
Uninstall: press this icon if you want to uninstall the plugin, noting that all related contents and settings will be deleted.