OpenRoads - Unable to edit feature definitions library.

I am unable to edit my feature definitions library.

Is there some sort of setting I am missing? I want to modify and create a number of feature definitions for use in SUDA but when in Project Explorer, right clicking literally does nothing except on existing Feature Definitions (which only offers to view the properties). I have full write access to the file but none of the Feature Definition creating/editing functionality is available to me.

See below: All of the Feature Definitions that are live in this .dgnlib file are colored dark-gray (as opposed to the referenced libraries which are a light-gray). They are actively in the file but if I want to rename, reorganize, create, or basically anything, I cannot. Every tutorial and video on the Feature Definition library assumes this supposedly easy task is available to all. I feel like I am missing something important yet very easy!