What you would typically do is put c:\windows\system32\runas.exe /user:domain\user /savecreds before the link to the exe. Since the SCCM admin console is an mmc snap-in it looks a little different.
This is what I ended up with - C:\Windows\System32\runas.exe /user:domain\user /savecreds "mmc \"C:\Program Files (x86)\Microsoft Configuration Manager Console\AdminUI\bin\adminconsole.msc""
Yes that extra floating \ is necessary.