In the Group Sets, you can choose to manually create groups.
In Course Navigation, click the People link.
Add Group Set
Click the Add Group Set button.
Create Groups Manually
Add a name for the Group Set . Select whether you would like to allow self sign-up . Make sure the I'll create groups manually option  is selected. Then click the Save button .
To manually create groups within the Group Set, click the Add Group button.
Name the group by typing in the Group Name field . If you want to limit groups to a specific size, enter the maximum number of group members in the Limit groups to field . To save the group, click the Save button .
Note: If your Group Set allows self sign-up and you set a group limit for the entire Group Set, the group limit will apply to each individual group you create. The option above allows you to modify the limitations within an individual group, such as changing one group to allow a few more members than the other groups. However, if you decide later to edit the entire Group Set and change the Group Set limitations, Curve will override all member limitations created within individual groups.
To create another group, click the Add Group button . You can create as many groups as you need. You can keep track of the groups by locating the groups counter .
To manage a group, expand the group , then click the Group Settings icon . To delete the group, click the Delete link . To edit the name of the group, click the Edit link .