The steps below describe how to change your terminal login username. The change applies to any terminal that is synched to the store through which you are resetting your terminal login username. 11).
Access your user account settings (see "My account" settings).
On the "My account" page, scroll to the "Terminal" module (shown below).
In the Username field, enter a new terminal login username.
Click on the Save button.
When the "User updated successfully" response displays, the operation is complete.