Approver to send FYI notification to a Role on an adhoc basis

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hello Experts 

I have a requirement where the Approver needs to send an adhoc FYI notification to a role. 

For example, manager initiates a transfer for an Employee. The request goes to HR BP as the first level approver. HRBP should have the ability to send an FYI notification to Payroll Admin. 

I have 2 questions -

1) While selecting Adhoc Route, I don't get the option to select FYI notification. By default, "Approve" is selected and the field is disabled. How can I activate this field and select FYI Notification.

2) Payroll Admin will be a role. I am not able to see any role in the application role drop down. But when I search it with Role code, I am able to see the role. Client has issues with this as he wants to see the Role Name.