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=3822701489
Mods=KnoxxyZombies
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Knoxxy Zombies - Round-Based Zombies [B42]3822701489 | 157 | description footer |