Welcome, Shane.
I'm not familiar with UK NBS referencing - so someone else should jump in to help on that if the following doesn't get you where you need to be.
What I imagine you saw in the door/window schedule tutorial would have been Element Schedules - where each element (something created by a single tool) can be scheduled as an entity, or summarized with similar elements.
You'll see in your Project Map and the Reference Guide that there are also Component and Surface schedules.
You're looking for a Component Schedule - which allows you to separately schedule each skin of a composite (or profiled) wall, for example... giving thickness, material, area, volume etc - vs a wall Element Schedule which would just give you those things for the entire wall.
These are the fields that you can schedule for the skins:
http://helpcenter.graphisoft.com/guides/archicad-19/archicad-19-int-reference-guide/views-of-the-vir...
Your IFC tags, and other info, can be edited in the schedule itself.
Note that in AC 20, you can generate graphic wall type schedules to show a 3D view of those composite wall types that you've created.
http://helpcenter.graphisoft.com/guides/archicad-20/archicad-20-reference-guide/new_features_in_arch...
Hope that helps!
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