The email notification parameters are enabled upon selecting the options in the E-Mail notification page.
Would you like to send e-mails to your users upon sign off?
Yes or No
Updates the EMAIL_SEND parameter from 0 (No) to 1 (Yes)
Who would you like to send an e-mail to?
Read / Write users
Sign Off users
Rollback users
Creates an EMAIL_PERMISSIONS parameter with values of either W (Read / Write users), -S (Sign Off users), -R (Rollback users), or a combination of them if multiples are selected
Who would you like to send every e-mail to (separate addresses with commas)?
Creates an EMAIL_RECIPIENT parameter with the values of the email addresses entered into the text box.