Special Thanks to cgodden for testing and documenting these steps.
Installing LANDesk 9.0 console on Terminal or Citrix server.
1. Open an MMC console and add the local computer policy snap-in.
2. Enable the User Account Control: Run all administrators in Admin approval.
3. Then disable the User account Control: Detect application installations and prompt.
4.Then installed the console after running this command c:\change user /install. Before restarting run c:\change user /execute
After the reboot able to add the LANDesk console to the terminal application, additional added IT group as a local admin(add custom group(s) as needed).