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=3823639728
Mods=XcroszRosewoodZombies
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Zombies Respawn Zone3823639728 | 80 | description footer |