1. Start Doomseeker with Sonic Robo Blast 2 plugin version 14 installed and working. (This is the typical setup for Doomseeker 1.3.1 bundle out of the box.)
   
2. Navigate to File → Create Game (Ctrl + S).
   
3. In Create Game top menu bar, make sure the "Mode" is set to "Host server". (Ctrl + M, H)
   
4. Make sure "Game" dropdown is set to Sonic Robo Blast 2.
   
5. Navigate to the Server tab. Notice there is an RCon password text field.
   

$ doomseeker --rcon SonicRoboBlast2 localhost
[16:51:17] Starting Doomseeker. Hello World! :)
[16:51:17] Setting up data directories.
[16:51:17] Cache directory: /home/wub/.cache/doomseeker
[16:51:17] Config directory: /home/wub/.config/doomseeker
[16:51:17] Data directory: /home/wub/.local/share/doomseeker
[16:51:17] Attempting to load plugins from directory: /usr/lib/x86_64-linux-gnu/doomseeker/engines
[16:51:17] Loaded plugin: "Chocolate Doom"!
[16:51:17] Loaded plugin: "Odamex"!
[16:51:17] Loaded plugin: "Sonic Robo Blast 2"!
[16:51:17] Loaded plugin: "Turok 2 Remaster"!
[16:51:17] Loaded plugin: "Zandronum"!
[16:51:17] Listening to Zandronum's LAN servers broadcasts on port 15101.
[16:51:17] Initializing configuration file.
[16:51:17] Setting INI file: /home/wub/.config/doomseeker/doomseeker.ini
[16:51:17] Loading translations definitions
[16:51:17] Reading localizations definitions file: translations.def
[16:51:17] Loading translation "system".
[16:51:17] Translation loaded.
[16:51:17] Initializing IP2C database.
[16:51:17] Initializing passwords configuration file.
[16:51:17] Initializing configuration for plugins.
[16:51:17] Initializing IRC configuration file.
[16:51:17] Setting IRC INI file: /home/wub/.config/doomseeker/doomseeker-irc.ini
[16:51:17] Init finished.
================================
[16:51:17] Starting RCon client.
[16:51:17] Plugin does not support RCon.