How To Add Admin On A Space Engineers Server
This will apply to a new world.
1 Stop the server.

2 Go to the File Manager on the Kinetic Panel.

3 Navgate to Config
4 Open SpaceEngineers-dedicated.cfg
5 Locate your SteamID64. This guide will show you how SteamId
6 Locate <Administrators/>
And replace it with
<Administrators>
<unsignedLong>STEAMID64</unsignedLong>
</Administrators>
7 Replace STEAMID64 with your own id from Step 5
6 Save & Start your server


Existing world.
If your world already exists follow this Open
1 Stop the server.

2 Go to the File Manager on the Kinetic Panel.

3 Navgate to Config > Saves > World
4 Open Sandbox_config.Sandbox_config.
5 Locate your SteamID64. This guide will show you how SteamId
6 Paste this into the file.
<Administrators>
<unsignedLong>STEAMID64</unsignedLong>
</Administrators>
7 Replace STEAMID64 with your own id from Step 5
6 Save & Start your server

