You may wish to have an "exam" that is not scored, such as to send a certificate for attendance. You can do this in one of 3 ways:
After the Identifier Questions (email, full name, etc), have a single question worth 1 point such as "Did you attend? Yes/No". Set the passing percentage to 100%.
Include only Identifier Questions (email, full name, job title, etc). Do not have any other questions following these. Set the passing percentage to any value. In this case, Certify'em will consider each exam taker to have passed with 100%. Note that for this method to work, you will need at least one identifier question past the full name (i.e. job title).
If you need to record additional information: Have as many questions as you want in the exam, but be sure to set the point value of all of them to 0 points, and also to set the passing percentage to "0%". In this case, Certify'em will consider each exam taker to have passed with 100%.