How to setup notification for nightly ACH and Accrual process that is taking place within NLS Service?

From Setup, NLS Service, click on Nightly Accrual, click on Modify icon, on the bottom, enable Send Notification and click on the eclipse button, where you are able to enter the email or SMS Phone# for the notification to be send to:

For detailed information regarding NLS Services, please review NLS User Guide: