Hi Ruth,
Thank you for reporting the issue concerning the ability to "ungroup" and remove imported point symbols. There have been improvements to the application since this bug was entered and the issue should now be resolved.
Please contact customer support if you still experience the problem.
Thank you for using Business Analyst Web.
Best regards,
Business Analyst Team
解决办法
Using ArcGIS Online instead of Business Analyst Online.1) Add data as a csv file to ArcGIS Online.2) Choose Type (Unique Symbols).3) Ungroup Others by clicking the arrow button beside the category name.4) Hide Others from Legend by unchecking the box next to it.