Create Username and Password Dell powerconnect 5548

Hi,

I am trying to set a username and password for my powerconnect 5548 switch, I am fairly new with Dell switches so please bear with me. I usually use cisco switches, and I only knew how to set a console password, enable password for the device, no username. Now I have this 5548 but the previous guy from my company forgot to update or share the username and password and I have to reset it without deleting the startup config. Now my questions are:

1.) Can you show me how to create a username and password? I've read some forum and says that the command should be #username password privilege 15 and that should be it, tried a few times but did not work.

2.) I have tried recovering the password for my test switch which is a 5524, it worked but then again, I don't have a username configured on this switch. Will the password recovery procedure bypass the Username as well for the 5548?

Here is a screenshot of my 5548, I can't login because we don't remember the username and password.

If my questions seem to be confusing I apologize in advance.

Thank you.