add info about valid swizzin user

[serut]

I had some trouble to setup swizzin.

I found out that re-using the admin account as the master user was not a good idea, as I could not open SSH connection after that. It's way more ok to create additionnal user than reusing the main admin account that I used to administrate the server

[liaralabs]

Sorry it's been so long to follow up on this.

Are you sure of this behavior? The default behavior when adding a user is that we will simply modify the existing user to turn it into a "swizzin" user. Another user account isn't created (as we cannot make duplicate account names regardless)

[serut]

Long time ago indeed !
I remember I need to input a password during the "Add user" process, so I though it was overriding the linux password used to connect to the server using SSH

[serut]

@flying-sausages sorry for the delay. I've accepted your review