Plugins on nodejs

So, is it just a matter of adding (drag and drop) it, like in a simple TiddlyWiki HTML file?

What are the specific instructions for Node.js (client-server configuration) for, like here:

tiddlywiki. com/#Installing%20official%20plugins%20on%20Node.js

tiddlywiki. com/#Installing%20custom%20plugins%20on%20Node.js

What would be the difference between dragging and dropping, and creating the “plugin” folder with the plugin inside it?