Usage - Rackkoun/rainmeter-skin GitHub Wiki
2. How to use rainru
2.1. Loading widgets
Move your mouse cursor over the notification bar, right-click on the Rainmeter icon and select "Manage" from the menu that appears.
In the Rainmeter management window, press the Refresh All button to bring up the rainru folder.
NOTE: The rainru folder may not be visible in the active skins field when it is first launched, so it is important to press the button to bring it up and load the widgets.
Then browse the subfolders of rainru, to load the widgets of your choice, by selecting the .ini file in these subfolders and pressing the "load" button.
The widget will appear automatically.
Repeat this step for the other widgets you want to load.