1. I deleted Table4 and replaced it with Table1 which now includes row five headers.
2. I added a new sheet: "UniqueLists"
3. To return the (named range: UniquePeriods) from sheet1, use **, column A:
4. A dynamic list of week numbers corresponding to the chosen period is returned to column B, with **:
**CSE array formulas
PeriodCount: =SUMPRODUCT(--(LEFT(UniqueLists!$A:$A,1)="P"))+1
WeekCount: =SUMPRODUCT(--(LEFT(UniqueLists!$B:$B,4)="Week"))+1
These are associated with the comboboxes on the graph sheet2.
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