The Admin Based Shipping extension allows you to manually set the shipping rate when creating a new order via the Admin Panel. This is particularly useful for merchants who calculate their shipping manually.
This extension works on new orders and editing existing orders using standard Magento functionality.
Please follow the standard guide to install this extension.
Once installed this extension should show when creating new orders as an option in the Shipping Method selection. If you do not see the extension then please ensure you have correctly merged with your theme.