I followed the guide by: V2C

Klei folder goes to C:\Users\YOUR-PC\Documents\Klei (C:\Users\Dev\Documents\Klei)

steamcmd folder goes to C:\ (C:\steamcmd)

but you can put it where ever you want (You will need to adjust the location on StartDSTServers.bat file)

If you are planning to have mods then follow this guide! CLICK ME!

Here's a snippet:

• Open DST Workshop and subscribe to mods you want to use.
• Start up DST.
• Click Host Game.
• Click New Server in Slot 1.
• Set the server intention in the Server Settings so the world can start.
• Toggle the mods you want to use.
• Configure the mods as you see fit.
• You don't have to enable Caves for this so ignore all the other tabs in the Host Game screen.
• Once done, generate the world.
• Once connected to the world, disconnect from the server.
• Now go to this location Documents\Klei\DoNotStarveTogether\Cluster_1\
• Under the Master folder, get the modoverrides.lua and that is the modoverrides.lua you'd want to use for your server
• Now paste that modoverrides.lua in your own dedicated server.
• There should be a copy of modoverrides.lua in both Master and Caves of your dedicated server.
• Next go to Steam\SteamApps\common\Don't Starve Together Beta\mods and copy the workshop folders you need.
• Then go to C:\steamcmd\steamapps\common\Don't Starve Together Dedicated Server\mods and paste the mod folders there.
• Start up the server with the StartDSTServers.bat file.