Help With a column in a datagridview

I have a datagridview, and it has 4 columns
ID, Code, User Name, password

I have a configuration button that brings the form up that contains the datagridview, where I can ad a new user, how can I make for the password field to when I type it shows like "*********",
and how can I make the data under the "User Name to automatically upshift?

Thanks,
For your help