How to download submods?

I have been trying to download the alternate start date sub mods for awhile now. I have followed the advice of what I've seen from the internet and moved the folders to Documents/Paradox/CK2/Mod, and yet still when I start the game it just doesn't come up. I have tried with both zipped and unzipped folders

I have the wolflings sub mod from awhile ago, so I know there must be a way, I just can't figure it out. If anyone has any insight that'd be really helpful