InventoryLab allows you to enter estimated inbound shipping charges in order to help you determine your profit on items as you list. The amounts put in this section DO NOT carry over to accounting. Actual inbound shipping charges are imported by IL into Accounting as an overhead expense at the close of each settlement period.
To change one of the rates, click on the rate amount in blue from either the Research>Scout page or the List>List & Prep page after an item is displayed, and enter the rate you want in the pop-up.
This will change the estimated shipping rate in both the Scout and List pages.