Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3820017912
Mods=LouisvilleCampaign
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Louisville Campaign3820017912 | 11 | description footer |