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=3820861672
Mods=ViewpointTreeFade
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Viewpoint Isometric Tree Fade3820861672 | 93 | description footer |