Excellent, thanks! That worked.
A tweak: instead of Member (which returns a number), User Full Name is better.
I tried adding Month of Year and Number of Year, but I don't know how to create a column that totals the monthly results, and I'd like that to sort on. Hoping creating a total column is pretty simple?
If you already have 'Activity Date', you can use that to create the differing time related variables such as MonthNumberofYear, Year etc.
For MonthNumberofYear here is the formula: =MonthNumberofYear([Activity Date])
For Year: =Year([Activity Date])
Then create a combination of the two:
Name - Month/Year
You can then use this to sort etc.
I hope this helps,