Maybe this will assist you:
STARTUP
From BI's built-in Help at "More Options" => "Startup"
Many startup options control the way in which
Blue Iris works with the operating system......
Running as a service or without Windows Admin privileges is quite an important topic, so
it is covered in the next chapter on
Administration.......
ADMINISTRATION
From Help at "Administration" => "Windows Administrator Access"
Blue Iris is security software, and as such requires Windows Administrator access to the PC. All settings are also stored in the Windows system registry under a location only accessible by a PC administrator. It is possible to configure the software to allow access by non-administrators in a couple of ways.
First, when running as a service, you can un-check the default option on the Startup page in Settings to Always run as Windows Admin.
You must also:
• Configure a user/password on the Users page in Settings. The user will be prompted for this when running the software. Although you may select Admin access for this account, the user will only truly have Admin access if they are a Windows system administrator.
• Provide a desktop icon link to BlueIris.exe instead of BlueIrisAdmin.exe
Instead, you may alter the access rights on the registry key used by Blue Iris to include non-administrators. The software checks writability to this key when determining if Administrator access is allowed. Open REGEDIT and locate the key.
HKEY_LOCAL_MACHINE\SOFTWARE\Perspective Software\Blue Iris
You may edit the permissions on this key to provide full control to the Everyone user or to a specific user or group. You must still run BlueIris.exe instead of BlueIrisAdmin.exe to avoid the Windows UAC authentication prompt.