Scrip Email Specific People on Custom Field Change

I have a select multiple custom field. When choice 1 is selected, I would like to email 4 specific people who are not associated with the ticket (not requestor/cc/etc). How would one write a scrip for this? Would these people have to be added as a requestor or cc? They aren’t concerned with receiving any other notifications about these tickets otherwise.

Also, are there any good scrip tutorials anywhere? It’s a bit of a foreign language to me.

Sounds similar to this:

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Sorry I’m only just getting back to this. I’ll take this for a test run and see how it does. Thanks for your input!