If you have a group of services that you use often, you can group them into your own service category to make them easy to find in the list. To add a new service category, go to the service list and select Create New > Category, add a name for the custom service and select OK.

Then select Category Settings and change the order in which the services appear in the list. To make your custom category easy to find, move it to the top of the list.

To add services to your category, edit them and set Category to the name of your custom category.