Create a group of contacts on iCloud.com
When you create a contact, it is placed in the All Contacts group. To help organise your contacts and make them easier to find, you can create additional groups.
Create a group
In Contacts on iCloud.com, click in the sidebar, then choose New Group.
A new group is added, with a placeholder name.
Type a name for the group, then press Return or Enter.
To change the group name, double-click it and type a new name in the text field.
Groups are listed in alphabetical order, with All Contacts at the top of the list.
Add contacts to a group
When you add a contact to another group, the contact also remains in the All Contacts group.
In Contacts on iCloud.com, click All Contacts.
Drag one or more contacts from the All Contacts group to another group on the left. You can add a contact to more than one group.