The Chamfer tool is the same as the bevel tool.  Yep, the manual doesn't show the icon and sometimes refers to it as the fillet, bevel or chamfer.  When you select the tool, you set the parameters off to the right -- the depth and the number of "steps" (I think -- I don't have C5 on this machine).  The higher the number of steps, the smoother the chamfer.

It's actually a really nice tool; would be nicer if you could find it from reading the manual!

HTH.