how can we edit the New Account Template notification on security console and adding logo?

Summary

how can we edit the New Account Template notification on security console and adding logo?

Content

Hello,

We would like to customize the Notification received to the worker email, when creating a new account of employee, and add logo and possible other HTML commands in order to design the text message .

when we click on security console - > set categories - default - notification
edit the template -'New Account Template'

how can we add logo and edit the message ? if its possible.

see attached file,

Thanks
Revital