If you don't have an email for this person, put the original contacts email in here, but add in +extra1 to the email. For example, if the original contacts email was colby@gmail.com, then put colby+extra1@gmail.com for the email address here. If there is another person you need to add, then you could put colby+extra2@gmail.com. [In other words, make a unique email for each person].
If you don't know the phone number, then leave it blank. DON'T put the original contacts phone number here.
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