When you’re logged into internet banking, if you click on menu in the top left hand corner, then click settings in the bottom right hand corner of the sidebar that would’ve popped up. From there, you should see various settings but at the top a section called security and directly below that the option change password. If you click that option it will then prompt you for your NetGuard care details then you will be able to change your password. You can do this as much as you’d like.
Hope that helps