This article explains how to create a SharePoint group. This is useful when you have a set of users that have the same permissions.
1. In SharePoint, click on Site Actions, then Site Settings.
2. Under Users and Permissions, select People and Groups.
3. Click on Groups in the left pane.
4. Click the drop-down arrow next to New.
5. Select New Group.
6. Add the name of the group, then click Create.