...
There are two steps to using an Event Attendance Form:
Create the survey that powers the Event Attendance Form
If you want the text, date, time or attachment fields in the survey to be completed for each guest , enable Fields For Each (rather than once per event), turn on One Field Per Contact on the survey
Assign that survey to the Event Category as the Event Attendance Form for that Event Category (described below)
How to assign a survey to an Event Category
...