Option 1: Right click object in scene and choose Edit Group or Edit Component.
Make editing changes as desired.
Right click again and choose Edit Group Complete or Component Complete.
Option 2: Right click on Component icon in Component Manager palette and choose Open “component name”.
The component opens in a new project window.
Make editing changes as desired.
Save then Close the file.
Option 3: Enable Unlock Groups or Unlock Components option from Edit pull-down menu.
Make editing changes as desired.
Note, be sure to remember if you turn this option ON because changes to groups or components are automatically applied with no need to open or close any editing modes.