To edit customer accounts:

• Go to Sales > Customers.
• Select the customer accounts you wish to edit.
• Click the Edit link given in the column of Action or click the customer account to open the customer detailed view.
• For individual editing, move the mouse over the field. Click the visible Edit link and edit the information. Click Save to save the changes.
• For making all the fields editable, tap the Edit link on lead detailed view. Update the information and click Save to save the changes,