Change user from 'FTP only' to 'FTP and SSH'

In Wemmin -> Edit Users. Someone set up a user as ‘FTP only’ but want it to be ‘FTP and SSH’. How do I change this? I spent quite a lot of time looking in Webmin and Virtualmin but no joy.

OK, worked it out. I need to set the shell for the user to /bin/sh.