Hi I am new to odoo. 

How do you send a custom email when time off is approved? Also, when time off is refused, an auto email is sent. I checked the "Email Templates" under the "Developer option" but was not able to find anything containing an email template for time off, where is it and how to change it? 

If coding is required for these changes, can someone help me with where to start and how to do custom editing? I am really lost with the studio.

Thank you.