Devices that use Username and Password for network authentication have to speak one of the following Protocols:
Click Add and provide User Name and Password and choose your Validity. After entering all details, click Create.
To Delete users, select all users which should be deleted in the list, click Delete and confirm your choice.
To change a user's password, disable/re-enable a user or select a new validity period, simply click on the eye symbol next to the user entry, change all needed entries and save them.