# Extend enrolment for all

This page allows you to extend the enrolment period for the all selected participants. The new enrolment period is computed based on a starting reference date and an extend period from that date. Depending on this combination you can actually restrict the enrolment period for participants.

The available starting reference dates are:

- Course start date
- Enrolment Started - the enrolment start date of the participant
- Enrolment Ends - the enrolment end date of the participant
- Today (this option in available only if the course start date has past)
- Course enrolment start date - the enrolment start date from the course settings page (this option is available only for courses with defined enrolment start date)
- Course enrolment end date - the enrolment end date from the course settings page (this option is available only for courses with defined enrolment end date)

If the extend period is set to 'Untitled', then the starting reference date is ignored.