As an admin or a training manager, you can set due dates when assigning courses to users. You can also control what happens when a user misses the course due date. You can either choose to auto-unassign the user if the due date is missed or you can lock them out of the course. For more information on how to enter due dates please visit this article.
Once the users are locked out of the course they will be able to access it but they will not be able to launch any lectures inside the course as they will get the following message.
There are some cases in which you would need to unlock the course for these users. In order to do so you would have to navigate to the employee's dashboard and find the locked course you wish to unlock.
Click on the course to reveal the list of users that are currently enrolled. The next step would be to locate the user for whom you want to unlock this course and click on the wrench icon. This will reveal the unlock option. Please refer to the following screenshot for reference.
Simply click on the unlock button. This will allow the user to access the course steps without any issues from now on.