You can edit Module items' names and indentation after they have been created.
In Course Navigation, click the Modules link.
Edit Module Item
Click the Settings icon  and select the Edit link .
Edit Item Details
You can edit the item title by typing in the title field . You can also edit the indentation level by selecting the indent drop-down menu .
Note: Changes made to one item will be made to all iterations of the item.
Click the Update button.