Showing assignee email id

Summary

when adding an employee to an enrollment it is showing assignee email id instead of general email id like training@company.com

Content

Team,

Any one has any suggestion how to solve or is this how the system behave? When employee enroll himself to an enrollment the calendar notification is showing as "training@company.com" (pic1) in "From" but when a manager or someone from HR is adding the employee to the enrollment, the person who assigned email id is showing in the receipts "From"  (pic2), we would ideally want to show the "From" email id as "training@company.com" in calendar notification . Is this normal or some setting have to changed?