Click the address book where you want to store the contact group.
Click the New button down arrow and then click Contact Group.
In the Group Name box, type the group name.
Under the Add Members to this Group section, do one of the following:
Select a member from the list.
Select non-consecutive members from the list while holding down the Ctrl key (Windows) or Options key (Mac).
Select consecutive members from the list by clicking the first member on the list and then holding down the Shift key (Windows and Mac) and clicking the last member.
In the Find field, type a name, select whether to search in the GAL or in your personal and shared contacts and then click Search.
In the text box, type addresses (including external, non-Zimbra addresses) separated by a comma, semicolon, or place each address on a new line.
Click the Add button.
Note: Clicking the Add All button will add everyone displayed in the list, regardless of who is selected.