link user

Hello
I have a doubt. I do not know if you can help me.

On my website, the registered users link is: miweb.com/author/nameofuser

With ultimate member, the link is redirected to: miweb.com/user/nameofuser.

But? How can i do this: miweb.com/nameofuser

Thus, it helps me to a better positioning, and that the users have a link and not two.