One-click command modules add in new Minecraft mechanics. They only use vanilla command blocks, meaning there are no mods required. To add in command modules, you need just one command block (sometimes more are needed). It's pretty much mods without the hassle of files.
How to Install Modules
Create a creative world with "cheats" enabled
Get a command block by typing in chat "/give @p command_block"
Place down the command block in the spawn chunks
Paste in the command provided with CTRL+V CMD+V or STRG+V (check the video description or click on the button if on the website)
If another command block is needed, place one on top of the first one