Yes you can make your own inspector editor by overriding the virtual protected void OnTaskInspectorGUI.
If you just want to add a button for example, you can even call DrawDefaultInspector() within it, to draw the default inspector.
Finaly note that fields with [HideInInspector] won’t show.
So it prety much works like when you make normal custom editor inspectors.
Just make sure that you put this within an #if UNITY_EDITOR 🙂
Gavalakis
