Sophos Email Security - can users change their own password without "forgetting" their password?

We have a customer who was having trouble logging into her email security self-service portal a couple of weeks back. She entrusted us with her password while we did some troubleshooting on her issue.  After we got things worked out (self-service portal address changed or was redirected from how we told our users to access it before) she was able to get into her self-service portal, but couldn't find a way to change her password from within the portal.  There's no "change password" button.  She was going to use "Forgot password", but at the time it was broken (now fixed).  

TLDR;

I don't want to tell my customers they need to "forget" their password at the login screen to change their password. That's bush league (aka unprofessional). Is there a better way to have them change their password? Or does this need to be a feature request?

Thanks,

Michael