Windows 8.1 Screen Lock Command

I've tried to create a command line shortcut to allow the user to lock the screen, but have been unsuccessful.  I am using the lockdown software on a standard workstation in my office, that can't be logged out of, so need to be able to use the standard lock screen feature of Windows 8.1, even if only available via a manual click/shortcut.  

Did you try creating a shortcut that "Runs as administrator" with the following command line:
C:\Windows\System32\rundll32.exe user32.dll,LockWorkStation

Perhaps the "run as administrator" is the issue, as that was the shortcut I created.  Do I have to add it to the software?

there is a "Run as administrator" option within the shortcut properties under the Advanced button.

Hi:  I tried your suggestions adding "run as admin" to the shortcut.  When that did not work, I tried to add the shortcut parameters to the lockdown app area, pointing to the rundll32.exe as the executable and the arguments in the arguments section.

If you do this, be sure to specify the Process Name field, otherwise Secure Lockdown wont monitor the process.

Process Name field?  Where is that located?  Thanks.

Assuming you're using Secure Lockdown - Standard Edition, the Process Name field is found under the Master Application tab. You can derive the Process Name by finding your program within the Windows Task Manager > Processes tab (it's usually the exe file name of your program).

Using the multi-app.  I have IE as well as hyper-v session running, so assumed I needed multi app?  

I have tried the same with no luck. Works perfect before enabling secure lockdown, but enabled it doesn't. As far as I can see there is no solution here and the process line is occupied by Citrix Receiver. Would be nice to have the option to allow ScreenLock somehow
SOLVED (by reading the Administrator Guide - SORRY) :

“HKEY_CURRENT_USER\Software\Inteset\SecureLockdown_v2"
Lock Workstation – To enable the "Lock Workstation" feature of Windows which is disabled by Secure Lockdown by default, add the registry DWORD key value “DisableLockWorkstation = 1"