Formatting the Excel File
This should be fairly simple, but there are a few things to be aware of:
Template of the Excel file MUST NOT be changed:
Do not change the column header names
Do not add new columns
Do not change the name of the spreadsheet tab
Name of the spreadsheet tab must always say “AddressBook” (one word, no space).
If there is no data available, just leave the column blank.
Need to determine group names in the Group column.
Example Address Book:
Depending on the number of people in the Address Book, you might want to consider creating multiple Address Books instead. The Address Book doesn’t have a hard limit on how many people it can hold, it’s more a question of the user experience you’re trying to create in the app.