Modifications in the game and the extreme patch (Divinity: Original Sin 2)

Guys, hello everyone! Tell me how to activate mods in the game Divinity Original Sin 2 Definitive Edition?
And it seems like a bag with modifications is on the main screen, but how to activate them is unclear.
And the question about the latest update of the game (3.6.69.4648), how to find out what innovations and fixes this update introduces?