Unfortunately, the Selection panel on the Manage tab is not enabled in Revit Architecture 2012!
It would certainly be nice to have this feature added to RAC. Perhaps in Web Update 1, please Factory?
Create selection for future use – WikiHelp
What Revit Wants
Thanks for the heads-up! I had initially tested the tip in Revit Structure.
— Kevin Dolley, Autodesk Revit User Experience Team