Before you quit the Shipping Agent Card you should select Navigate, Services from the top of the page. This allows you to enable the services you wish to use for this agent. The list is downloaded from that agent via Clever Dynamics web service, but you may not wish to use all of the services there are. You need to set ‘Enable’ on for the ones you do wish to use.
These were the options at the time of publishing for DHL, logically if you only ship domestically you would enable the first DOMEXPRESS option only,
Looking at the same list for FedEx there are more options, but you need to confirm with FedEx which ones you have commercial agreement on and only enable those. Here we have only enabled their standard next day service NEXTDAYEND and their next day by 10am service NEXTDAYMIDMOR.