Oracle Database Management - Oracle 10g Database Administration Concepts and Implementation Made Simple - page 244

Managing Redo Log Groups/Redo Log Members
Under the Administration tab of Oracle Enterprise Manager
Database Control, we have “Redo Log Groups” link. Clicking
this link will take you to Redo Log Groups page which will not
only provides you the current information about redo log groups
but helps you to add new group or new member for already
existing group.
Figure 9-10: Redo Log Groups link under Administration tab of Oracle
Enterprise Manager Database Control.