As long as your server is running Spigot/Bukkit, you can install Bukkit Plugins! (Note, if your using Forge / modpacks, then you can't use Bukkit Plugins. Its either one or the other)
You can use the BUKKIT PLUGINS section of the control panel to find and install plugins quickly. But only the most common plugins are listed.
So here's how you can do it manually:
You can search for spigot / bukkit plugins using google and download from:
https://dev.bukkit.org/bukkit-pluginsAND
https://www.spigotmc.org/ (Though we recommend you search for spigot plugin via google as it gives faster and better results
1) Download the JAR File to your PC
2) Go to FILE MANAGER and into the PLUGINS folder
3) Drag and Drop the downloaded plugin from your PC right into file manager.
4) Restart server! (You can also type reload in the console)
