I'm trying to compare the Tapestry segments for a set of addresses I've uploaded from CSV, to answer questions such as "what are the most common dominant tapestry segments within my address set?" I've added a USA Tapestry Segmentation layer so I can see the tapestry summary for each individual address point. It seems like Perform Analysis --> Summarize --> Aggregate Points should work, but the tapestry layer is not accessible there (only the layers I uploaded are available). I must be missing something basic. I'm a noob with ArcGIS online. Any help is much appreciated!