When happy with the Group Enrolment, go ahead and create the Student Accounts and Enrolments.
Create Students button at the top of the screen will trigger a background process in the system to take the details from the Group Members panel and the relevant Bookings, and create an individual Student Account together with a Student Enrolment containign the Booking that are applicable to them.
All the details entered in the Group Members panel will be pushed through to the Student Accounts.
The Student Accounts and Enrolments are the same as individual Student Accounts and Enrolments as far as placement and reporting is concerned, but any changes to the Enrolment details must be made through the Group Enrolment rather than through the individual Student Enrolment.