How To Add Plugins To An Unturned Server

first

second

I dont see a tpa plugin on mine can someone help

how u do this for mc server tho where is mc tutorials.

How do I add safezone plugin? And how do I make kits?

What do I do if I don't have kits,home and a lot more plugins also at the plugins panel I've got plus icon instead of a puzzle piece like in the video

Update your video please.
I don't see any of those options.