you need to create a seperate discount for each flat rate.
the triggers section is how you tell it when to apply the discount.
the first example i gave used the trigers:
Triggers:
Subtotal for any column:
If the subtotal of Column [Quantity] is [>] a value of [0]
AND
Subtotal for any column:
If the subtotal of Column [Quantity] is [<=] a value of [5]
that means it will will triger if the quantity in the cart is greater than 0 and Less than or equal to 5.
to create the rule for 6-11, the trigger will be:
Triggers:
Subtotal for any column:
If the subtotal of Column [Quantity] is [>] a value of [5]
AND
Subtotal for any column:
If the subtotal of Column [Quantity] is [<=] a value of [11]
You just need to change the values being used for the quantity comparison.
