You can set up an application type to email
event administrators
the managers of sections that can view the applications
Go to the Application Type (Event level... Applications... Application types) and click to edit the application type you're interested in.
Scroll down the form to the bottom where you'll find "Users that you wish to alert via email on application submission"
Use the dropdown to select a user to inform
Click on "Add user to alert"
You can repeat selecting a user and adding them as many times as needed.
Click on "Save" to save your changes to the application type.
7. The selected users will now get an email whenever there's a new application for that type.