We are running 3.9.4, and currently using self enrolment with enrolment keys for courses.
I am trying to work out a way of allowing extension of the enrolment period by participants rather than needing a manual intervention. There would be payment required before an extension can happen (which is not taken through Moodle). Is it possible to use an enrolment key to extend the period of enrolment, or activate a new enrolment? Or would another method be more appropriate?