After you add the mod to list of dedicated mods...
You need to "enable" mod

And to do that... you just start world on singleplayer and select the mods you want to use

Game will save the IDs of selected mods in the world's folder
and dedicated will load those mods ID by ID

on windows

Workshop mods are there:
*steam location*\Steam\SteamApps\workshop\content\254200\

Dedicated server mods are there:
C:\Users\%username%\AppData\LocalLow\ProjectorGames\FortressCraft\WorkshopMods\

You need to manually copy paste mods from 254200\ to WorkshopMods\, and do it each time mods are updates >sometimes the WorkshopMods\ doesn't create itself automatically and you have to create this folder<


Personally I have decided that it's stupid...
And I have removed folder "WorkshopMods" and instead I have create link (shortcut, whatever you call it) "WorkshopMods" which takes you to 254200\ and it works, server sees mods that were downloaded from workshop (updates work too)

1)

you mean..
1) How to install mod on dedicated server? (It doesn't use workshop mods automatically)
2) How to enable mod? (even after you prepare mod you need to specially enable it)
3) Mod doesn't work on server

How does one get this to work on a dedicated server?

yay, thank you very much. I had forgotten about this until I started playing again