To translate or change the user title, you need to open the Workflow Designer, and open the Process you are using in the Identity Manager/Identity Portal, see images below:
1) From left panel, click Open Process option
2) From the list open the process used by Identity Portal
3) With the process opened, click on the Activity Properties you want to change/translate.
<Please see attached file for image>
4) After that, refresh the Identity Portal to get the information updated.