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=3822278260
Mods=InstantResearchB42.21
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Instant Research B42.213822278260 | 3 | description footer |