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user registers
User gets an email at the email address provided with a link for email address confirmation
user requests a resend of confirmation message
User is resent the email address confirmation message
user requests password reset
User gets an email with a link that allows the user to set a new password
user requests unlock account
User gets an email with a link that allows the user to unlock their account

user enrolls successfully to a training
User gets a welcome message for the training containing information about the training, payment, terms, other instructions
user enrolls to a full training's waiting list
User is informed about being successfully added to the waiting list of full course or training
enrollment is cancelled by user
User receives a confirmation of the enrollment cancellation
enrollment is cancelled by admin
User receives a confirmation of the enrollment cancellation
user on waiting list gets a place
User gets informed that a place became available and they are now enrolled
training has ended
After the last training day the user gets a congratulatory message and an invitation for giving feedback
a training is approaching
Before the first training day the user gets a reminder message and possible additional details and instructions
admin sends message to course participants
admin sends message to course participants

user makes a successful booking
User gets booking confirmation, details and possible extra instructions
user cancels a booking
User receives a confirmation of the booking cancellation
admin cancels a booking
User receives a confirmation of the booking cancellation
a booking is approaching
The user gets a reminder message and possible additional details and instructions before an upcoming booking
admin sends message to booking owner
admin sends message to course participants

What, when, how?