informational and blocking alerts

Summary:

Include informative and blocking alerts and the linked requests

Content (please ensure you mask any confidential information):

We have to check for our client if is it possible to include informative and blocking alerts (better if they are sent automatically sent byu the sistem during the enrollment).

If this check is possible the request are the following:

1. Percentage of convocation people from the same Organizational Unit on the same date.
2. The user is already enrolled in another course on the same date.
3. The user has already completed the course in the past.
4. The user is already enrolled in a previous edition of the course.