You can use the Email Connector module in the Marketplace to send emails.
https://docs.mendix.com/appstore/modules/email-connector/
In this case, you'd probably want to create two templates, one for the administrator's email message, and one for the employees.
Make the Save button a microflow. In that you can set the status, commit the data, and send the two emails.
Look at the microflow Sample_ACT_SendEmailWithTemplate in the Email Connector module for a working example of sending an email in a microflow.
I hope this has helped. Good luck!