Answer

1. Create a parameter calls select a date unit
2. Create a calculation field like below and name it week or month

   if [select a date unit] = 1
   then 
   DATEPART('week',[Order Date])
   ELSEif [select a date unit] = 2
   then 
   DATEPART('month',[Order Date])
   END

3. Create a calculation field like below and name it most recent label 

   if [select a date unit] = 1 then 
       if [week or month] = {fixed:max(DATEPART('week',[Order Date]))}
       then [Sales]
       END
   ELSEIF [select a date unit] = 2 then 
       if [week or month] = {fixed:max(DATEPART('month',[Order Date]))}
       then [Sales]
       END
   END

4. Drag week or month to Columns, Sales to Rows, Category to Color, most recent label to Label
5. Exclude the newest point of Furniture.
6. Confirm Label for Furniture is no longer shown in the view.