ShipHero - Mapping New Shipping Methods
It is extremely important to ensure that your shipping methods are always mapped between your marketplace (i.e. Shopify, WooCommerce, etc.) and ShipHero. If they are not then there is a very good chance the system will just select "Cheapest Method". This can be an issue if you add an expedited method like Overnight. Here are instructions on where you need to go to check mapping:
https://software-help.shiphero.com/hc/en-us/articles/4419345072653-Setting-Up-Shipping-Methods
Note: ALWAYS select "12pm" & "Same Day" for the option that says "Orders Placed Before" otherwise your orders will not ship on time.