If you choose to use one of the custom shipping types, after configuring your settings, you will need to set up your shipping table. This will determine the base shipping amounts to use for different price, weight or item ranges. The shipping table will look a little different for the different methods, but the idea is basically similar for each. You might need only one entry in the shipping table, but at least one is necessary for any of the custom shipping types. The amount calculated from the shipping table is then used as a base when adding additional amounts from the custom methods and/or the country rates.
When you click on Shipping Table, your current ranges will be displayed, as well as a form for adding new ranges. You will also have links to Edit or Delete the current ranges. You should be certain not to have overlapping ranges or your shipping calculations may not behave as expected. Your lowest range should start at 0.01 (or 1 for number of items) otherwise shipping will be applied to all orders, even those with an amount of 0 (which is generally an order with only items with free shipping). For each entry in the table you will need to enter the following:
Minimum Amount – The minimum amount for this shipping charge. For shipping by price, this will be in the currency defined for your store. For shipping by weight, this will use the weight unit defined for your store. For shipping by items, this will be the number of items ordered.
Maximum Amount - The maximum amount for this shipping charge. For shipping by price, this will be in the currency defined for your store. For shipping by weight, this will use the weight unit defined for your store. For shipping by items, this will be the number of items ordered. If you want to have no upper limit, just make it a very large number.
Shipping Amount/Percentage – The amount of shipping to charge or percentage to use for the calculation.
Please note that if you change the main shipping method, the shipping table may require modification to work properly. For instance, if you switch from an Amount Added method to Percentage method, the shipping table will have some really high percentages until they are changed!