GameUserSettings.ini
First thing mentioned in that thread.

Default settings is not having anything at all. As he mentions in the bottom of the thread, those are the settings HE runs on his servers.

So kindly asking WHERE is this file, and where and HOW do i hve to add it?
I added one line at the end of some GameUserSettings.ini which I found somewhere (no idea if that's the right one"

You say nothing if its singleplayer or a server, but Steam\SteamApps\common\ARK\ShooterGame\Saved\Config\WindowsNoEditor\ if its SP and Steam\SteamApps\common\ARK\ShooterGame\Saved\Config\WindowsServer\ if its server.

Confer with serverhost if hosted elsewhere, but basically the same.

Dont forget the header [ArkAutomatedSettings] and any changes below it.

I thought this is only for Servers oops, anyway im Running on Server and i inserted the header.(Found GameUserSetting twice so I added it twice, but somehow it won't work, maybe the setting is broken.

I'm trying to increase the range of the refridgerated feeding throughs.
So I just inserted that one line for that, or do I have to insert all settings?

No, only the setting you want to change should suffice.

[ArkAutomatedSettings]
FeedingTroughPullRange=10000