How to calculate Period number in which maximum quantity was sold ?

Hi all,

I am having bit of a trouble finding the period number in which max quantity was sold. I want to create a table in which I can show Period(Quarter/Month/Week) - Year wise maximum quantity sold.

In the above image(1) I have highlighted the maximum quantity sold in each year. I can also select period by parameter image(2) .

In the above table I want to show the month number in which maximum sales was made. Please suggest me what can be done to achieve this.

Any help would be appreciated.

Dataset used : Sample_super_store

Here's the link for my tableau's workbook :      https://public.tableau.com/views/Max_sales_in_period/Sheet3

                                                                          https://public.tableau.com/views/Max_sales_in_period/Reference_to_period

Thank you.

PS: Spare me if I have missed out any detail, this is my first post