1. From GroupWise open the Address Book.
2. Click one of your personal address books where you want to create 
    this group. 
3. From the tool bar click new then select Group.
4. Type a name for the group.
5. Type comments, such as a description of the group.
6. Click Add.

7. Select one of the address books to look in.
    Scroll down to the name of the address you want to add or type 
    the name in the  “Look for” box to search for it.
8. To add a address just double click it or drag it into the “Selected” 
    box
9. Click ok to save the Group

You can also create groups any time you are composing a message to multiple people. 
Just select the people you want to send the message to then open up the address book if not already in it. 
Click the "Save Group" icon at the bottom right corner of the address book.
Type a name for the new group and click OK to Save

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