Got the first part. But have a question here:
Flat Rate calculation of:
(($this->TotalColumn('TotalPrice') * 0.1) > 4)?$this->TotalColumn('TotalPrice') * 0.1:4
I don't see a place after Flat rate selection in the shipping tab to insert the calculation code.
Does this go in the calculation tab and if so what goes in the calculation section of the shipping tab?