By default the Asset Bank login screen will ask users for an email address and password in order to log on to the system, as shown below.
This default label is suitable as most clients use the same information for both the email address and username fields when creating their users - it's even possible to leave username blank by default and it will be automatically populated from the email address.
If your organisation has a separate naming convention and you want to have different information for email address and username, then it is likely you also want to change the placeholder text on the login screen to reflect the new text - such as Username, User ID, etc.
It is possible to change the system to use text of "Username" by updating the following setting from TRUE to FALSE:
You can then edit the "Placeholder - Username" content item from the Admin > Content screen in order to further customise the displayed text.