Edit the distribution list for groups and Smart Groups in Contacts on Mac
In the Contacts app on your Mac, choose Edit > Edit Distribution List.
Select a group or Smart Group in the list.
If you use multiple accounts in Contacts, the list is organised by account.
Click the rightmost column heading, then choose Email, Phone or Address.
The address or phone number currently used is highlighted in bold.
To use a different email, phone number or street address, select it, then click OK.
Contacts are shown in the distribution list only if they’re members of a group.