Don't think there is any direct way to do this. You could look to use the validity period (without the shift deadline option) but that would not necessarily remove the ability to take the course again until the validity period ends and locks the course...perhaps something like this could work for you??

Hello @lrnlab , thank you for your tip. 

It's not the ideal solution, because I have to limit the course time, but I`ll test it.

Thank you.

We have a “Question of the week” that a user is only allowed to take once. In the “training material” section, we upload the scorm file, then click “Settings” where you can set it up so that the user only views the course once or until the complete the course.

Hello @sigamoline , thank you for your help.

I tested and works.

Thank you. 

How do I change the “Best answer” flag, and mark your answer with “Best answer”?