Select Employee from the tasking zone and click on View /Edit Employee details . You will see a list of all your current employees, click on the View/Edit link relating to the employee concerned. Now click on the View/Edit button in the Bank Details section. Here you can view your employee's bank details. To edit the details click on Edit, do the necessary changes and click on the Save button to save the changes you made.

Road Map - View / Edit Employee's Bank Details
Employee -> View / Edit Employee Details - > Employee Details -> Action -> View / Edit Link -> Bank Details -> View / Edit button
( 'Employee' is the button positioned in the tasking zone menu at the top. It is the second button from the left)