Get Item Sales Quantity per Customer by period

hi all, i’m making a customized report in which i will forecast all of the quantity of the Items sold to the customer depending on the period(s) : Week, Month, Quarter and year.

i’ve already made the filtering of Items of the specific customer bought.

now my problem is that my report doesn’t have a period filter. in which it will show the quantity of those items depending

on which period the user have selected in the request page.

thanks to those who will answer