Thanks for looking into this Andy.
qvf file attached.
Just to clarify - I have created chart that shows Sales Quantity against time.
I have filters on the left - Date Filters and Filter for Major Food / Bev Group then filter for sub groups (Type of Food) and another filter for individual items.
I would like to be able to select a few items from the list (either same filer list or a copy of it) and show them as their own line on the chart so I can then compare how each item is doing month by month against other items.