[cosufw1]

Once you have created the user, edit /etc/passwd and change "cpshell" to "bash" at the end of the user line. It should look like this:
user1:x:0:0::/home/user1:/bin/bash

Then edit /etc/group and add the user to the appropriated groups, separated with comma:
root:x:0:root,user1

Don´t forget to create /etc/scpusers with the user name, if you want SCP access.