Hi Keira,
You can send the email to multiple recipients by adding them and clicking the "+" icon shown in your second screenshot. Or did I misunderstand your question?
I see you're using `{instance('fr-form-instance')/Employee-name}` in your template, which won't work. Instead, you should define a template parameter in the next tab, name that parameter `employee-name`, map it to the control of the same name, and use `{$employee-name}` in the body of your message.
To test sending email, I recommend adding the `email` button to the buttons shown on the detail page (even if only temporarily) by changing the `oxf.fr.detail.buttons.*.*` property, and then using that Email button.
-Alex