First of all, make sure you’re in the blue 'Students' tab of the Admin Hub:
Select the student record you wish to edit. You can use the search bar to help you narrow down your results:
You can then edit the details of the student account:
If your edits include a change to the email address, an email will be sent to the new address and the change won't be made until the user clicks on the generated link from the email to verify the change.
Once you have finished editing the student account, click 'save' to ensure your changes are updated.