It seems like I'm able to configure these for AGO hosted layers only, but any layers that are on my organizations portal/server are not configurable.
Currently authoring layers is limited to feature layers. You will need to select the layer on the Layers pane and then those tools will become active. To see what layers support further authoring check this compatibility guide.
Compatibility Guide for web maps created with Map Viewer (classic) and Map Viewer Beta
Thanks for the quick reply!
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