Missing "Label" tab in course settings

A colleague (who is currently away) created a Rise module for me "Žinių vertinimo testas" and added me as a collaborator. I would like to change the default "Labels" for the course (as I need them in Lithuanian) however the 'label' tab is missing in the course settings? Is there something wrong or am I missing something obvious? Other courses shared with me have this tab - and of course, any course I create also has this tab - why not this course:

Thanks in advance!

David