I am trying to use the Overlay Function in my Chem3D. How can I enable this function?

I am trying to use the Overlay Function in my Chem3D. How can I enable this function?

From v18.0 we have two installers available:
1. Windows platform (cos18.x.exe, cos19.x.exe, cos20.x.exe)
2. Mac platform (cd18x.dmg, cd19x.dmg, cd20x.dmg)

All ChemDraw suite product types are activated based on a unique activation code.

If you use the ChemDraw Professional activation code for the Chem3D application, it will work at the Pro level. On the other hand if you use the ChemOffice Professional activation code for the Chem3D application, it will work at the Ultra level.

Currently, the Overlay function included with Chem3D Ultra level is what will activate using the ChemOffice Professional activation code.

Since you have activated the product using ChemDraw Professional activation code, you didn't get the Overlay function. This function will enable only once you reactivate the product using ChemOffice Professional activation code..

You will get the information (comparison chart that compares the features available in ChemDraw Prime 20.0 vs. ChemDraw Professional 20.0 and ChemOffice Professional 20.0) from the following link. You need to select the "Resources, Events & More" tab and then click the "Which Chemdraw Solution is right for you?" link

http://www.perkinelmer.com/product/chemdraw-professional-chemdrawpro