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=3821704555
Mods=PlaceAnywhereMPCompat
| Workshop item | Subscribers | Declared in |
|---|---|---|
| [B42] Place Anywhere MP Compatibility 3821704555 | 20 | description footer |