@kanashi横維, are you hoping there's a way to hide this TRIGGERcmd tray icon?
Sorry, there's no way to hide it.
Actually, you could install the background service, then prevent the TRIGGERcmd Agent shortcut from executing when you login. If you do that, you'll need to manually run it to get to the GUI Editor for commands.json.
To prevent the TRIGGERcmd Agent shortcut from running (the "foreground" agent), you would remove it from your Startup folder.
Press Windows-R and paste in shell:startup and click OK.
Then delete the shortcut or move it out of the Startup folder.