I am using Roboflow to annotate my video and I am trying to add an attribute (Subclass) to the label box(class). I’ve checked all the resources and the latest documentation says that the feature to add attributes to my classes as subclasses should be available in the project settings page. However, I can’t seem to find it.

I am currently using a free public plan. Could this be the reason why I am unable to access this feature? Has anyone else experienced this problem? Has this feature been disabled in the free version with the recent update? If upgrading to a paid plan solves this issue, I am willing to consider it.