Question: Is it possible to setup a notification email being sent to multiple operators for that specific job?

I don’t believe this is possible.

Certainly looking at the structure of [msdb].[dbo].[sysjobs] the various operator_id columns are in this table itself which would support the idea that 1 to many is not possible.

But some alternatives

1. You could create a new operator with the semi colon delimited list of email addresses. Looking at the definition of sysoperators this is good for strings that can fit in nvarchar(100)
2. if you need to exceed that you could probably set up an email distribution group on exchange or whatever.