PROBLEM:
You address a mail memo to a group. When the group name you specify in the To: (or cc:) field is a public group name, located in the Public Name and Address Book (N&A Book), the group name does not expand when you send the memo (or press F9 to refresh the fields). You cannot determine, therefore, which individuals comprise the group. If you place the same public group name in the bcc: field, the group does expand to show all the members. In addition, when you place a private group name (from your private N&A Book) in either the To or the cc: field, the group also expands.

SOLUTION:

FIELD	$ExpandGroups
TYPE	Text
VALUES	"0" - Do not expand private or public groups "1" - expand private groups only (same as default behavior)        This will also expand groups in local replicas of Public directories "2" - expand public groups only "3" - expand private and public groups
RESOURCES	Wie löst Notes Gruppen auf? by Spotlight (german) #1086738: Group Name from Public N&A Book Does Not Expand in To: or cc: Fields by IBM/Lotus Support #1102214: Group Expansion in the Invite Field of a Meeting Invitation Differs from TO Field of Memo by IBM/Lotus Support