I installed Cameo for ChemDraw 7, however the Cameo menu does not appear when I launch ChemDraw.
Cameo requires that ChemDraw be installed per machine, so it is possible that you did the initial install as a per user install. Uninstall Cameo first, and then ChemDraw. Reinstall ChemDraw making sure that you install for ALL USERS of the computer. Then install Cameo.