Hi,
Can you please tell me, how are you inserting the Certificate Widget, is it from Interactions (Insert--Interactions) or from the Widget.
Can you try using the certificate widget (Insert--Widget) from <Captivate Installed Location>/Gallery/Widgets and as it would allow you to print the user name as well as add a Company logo.
I assumed that you are using Captivate 6, can you please confirm if I am right, check help--About Adobe Captivate and share the exact version.
Thanks,
Anjaneai